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热门问题

等级	主题	问题	格式化的问题
29801	判断是否为真	sin(pi/8)=( 2)/2 的平方根	$\sin (\frac{π}{8}) = \frac{\sqrt{2}}{2}$
29802	判断是否为真	sin(0)+(cos(0)cot(0))=csc(0)	$\sin (0) + (\cos (0) \cot (0)) = \csc (0)$
29803	判断是否为真	sin(0)+cos(0)-cot(0)=sec(0)	$\sin (0) + \cos (0) - \cot (0) = \sec (0)$
29804	判断是否为真	sin(0)=0.52	$\sin (0) = 0.52$
29805	判断是否为真	sin(19.3)=358.0428	$\sin (19.3) = 358.0428$
29806	判断是否为真	sin(2(pi/8))=( 2)/2 的平方根	$\sin (2 (\frac{π}{8})) = \frac{\sqrt{2}}{2}$
29807	判断是否为真	sin(2(pi))=sin(pi)cos(pi)	$\sin (2 (π)) = \sin (π) \cos (π)$
29808	判断是否为真	sin(2)=2( 8/3)(- 的平方根 1/3) 的平方根	$\sin (2) = 2 (\sqrt{\frac{8}{3}}) (- \sqrt{\frac{1}{3}})$
29809	判断是否为真	sin(2*(5pi)/6)=-( 3)/2 的平方根	$\sin (2 \cdot \frac{5 π}{6}) = - \frac{\sqrt{3}}{2}$
29810	判断是否为真	sin(2*(7pi)/18)=sin((7pi)/18-pi/6)	$\sin (2 \cdot \frac{7 π}{18}) = \sin (\frac{7 π}{18} - \frac{π}{6})$
29811	判断是否为真	sin(290)>cos(290)	$\sin (2 \cdot 90) > \cos (2 \cdot 90)$
29812	判断是否为真	sin(20)sin(40)sin(60)*sin(80)=3/16	$\sin (20) \cdot \sin (40) \cdot \sin (60) \cdot \sin (80) = \frac{3}{16}$
29813	判断是否为真	sin(20)=0.9cos(20)	$\sin (20) = 0.9 \cos (20)$
29814	判断是否为真	sin(20)=( 2)/2 的平方根	$\sin (20) = \frac{\sqrt{2}}{2}$
29815	判断是否为真	sin(20)=2(15/17)(8/17)	$\sin (20) = 2 (\frac{15}{17}) (\frac{8}{17})$
29816	判断是否为真	sin(20)>sin(160)	$\sin (20) > \sin (160)$
29817	判断是否为真	sin(20.5)=90/22	$\sin (20.5) = \frac{90}{22}$
29818	判断是否为真	sin(20.75)=1200	$\sin (20.75) = 1200$
29819	判断是否为真	sin(20-pi/2)=1	$\sin (20 - \frac{π}{2}) = 1$
29820	判断是否为真	sin(0)=csc(( 8)/2) 的平方根	$\sin (0) = \csc (\frac{\sqrt{8}}{2})$
29821	判断是否为真	sin(0)cos(0)+ 2cos(0)=0 的平方根	$\sin (0) \cos (0) + \sqrt{2} \cos (0) = 0$
29822	判断是否为真	sec(51)>csc(51)	$\sec (51) > \csc (51)$
29823	判断是否为真	sec(60)=2	$\sec (60) = 2$
29824	判断是否为真	sec(60)>sec(45)	$\sec (60) > \sec (45)$
29825	判断是否为真	sec(74.8)=1/(cos(74.8))	$\sec (74.8) = \frac{1}{\cos (74.8)}$
29826	判断是否为真	sin(arcsin(1))=1	$\sin (\arcsin (1)) = 1$
29827	判断是否为真	sin((pi/3)/2) = square root of 3-sin((pi/3)/2)	$\sin (\frac{\frac{π}{3}}{2}) = \sqrt{3} - \sin (\frac{\frac{π}{3}}{2})$
29828	判断是否为真	sin((pi/4)/2)+cos((pi/4)/2) = square root of 2	$\sin (\frac{\frac{π}{4}}{2}) + \cos (\frac{\frac{π}{4}}{2}) = \sqrt{2}$
29829	判断是否为真	sin(( 39)/8)+cos(25/64)=1 的平方根	$\sin (\frac{\sqrt{39}}{8}) + \cos (\frac{25}{64}) = 1$
29830	判断是否为真	sin(-0.6435^2)+cos(-0.6435^2)=1	$\sin (- {0.6435}^{2}) + \cos (- {0.6435}^{2}) = 1$
29831	判断是否为真	sin(0/2)+cos(0/2) = square root of 2	$\sin (\frac{0}{2}) + \cos (\frac{0}{2}) = \sqrt{2}$
29832	判断是否为真	sin(0/2)=-( 3)/2 的平方根	$\sin (\frac{0}{2}) = - \frac{\sqrt{3}}{2}$
29833	判断是否为真	sin(1/2)*1=2cos(1)	$\sin (\frac{1}{2}) \cdot 1 = 2 \cos (1)$
29834	判断是否为真	sin(-1/3)=csc(3)	$\sin (- \frac{1}{3}) = \csc (3)$
29835	判断是否为真	sin(1/3)=tan(1/2)	$\sin (\frac{1}{3}) = \tan (\frac{1}{2})$
29836	判断是否为真	sin(15/2) = square root of (1-cos(15))/2	$\sin (\frac{15}{2}) = \sqrt{\frac{1 - \cos (15)}{2}}$
29837	判断是否为真	sin(157.5/2) = square root of (1-cos(157.5))/2	$\sin (\frac{157.5}{2}) = \sqrt{\frac{1 - \cos (157.5)}{2}}$
29838	判断是否为真	sin((17pi)/4)-cos((17pi)/4)=0	$\sin (\frac{17 π}{4}) - \cos (\frac{17 π}{4}) = 0$
29839	把角度转换为弧度	230 次数	$230 °$
29840	判断是否为真	sin((23pi)/24)=sin(pi/24)	$\sin (\frac{23 π}{24}) = \sin (\frac{π}{24})$
29841	判断是否为真	sin(3/7)=csc((7 10)/20) 的平方根	$\sin (\frac{3}{7}) = \csc (\frac{7 \sqrt{10}}{20})$
29842	判断是否为真	sin((7pi)/6)=sin((11pi)/6)	$\sin (\frac{7 π}{6}) = \sin (\frac{11 π}{6})$
29843	判断是否为真	sin((8pi)/7)=sin(pi/7)	$\sin (\frac{8 π}{7}) = \sin (\frac{π}{7})$
29844	判断是否为真	sin((9pi)/4)=cos((8pi)/4)	$\sin (\frac{9 π}{4}) = \cos (\frac{8 π}{4})$
29845	判断是否为真	sin(pi/14)*7=sin(pi/2)-1	$\sin (\frac{π}{14}) \cdot 7 = \sin (\frac{π}{2}) - 1$
29846	判断是否为真	sin(pi/2) = square root of 1-cos(pi/2)	$\sin (\frac{π}{2}) = \sqrt{1 - \cos (\frac{π}{2})}$
29847	判断是否为真	sin(pi/2)-2=cos(pi/2)-2	$\sin (\frac{π}{2}) - 2 = \cos (\frac{π}{2}) - 2$
29848	判断是否为真	sin(pi/2)sin((2pi)/9)sin(pi/3)sin((4pi)/9)=3/16	$\sin (\frac{π}{2}) \sin (\frac{2 π}{9}) \sin (\frac{π}{3}) \sin (\frac{4 π}{9}) = \frac{3}{16}$
29849	判断是否为真	sin(pi/20)<0.2	$\sin (\frac{π}{20}) < 0.2$
29850	判断是否为真	sin(-pi/3)=-( 3)/2 的平方根	$\sin (- \frac{π}{3}) = - \frac{\sqrt{3}}{2}$
29851	判断是否为真	-sin(pi/3)=cos(pi/2+pi/3)	$- \sin (\frac{π}{3}) = \cos (\frac{π}{2} + \frac{π}{3})$
29852	判断是否为真	sin(pi/3)cos(pi/3)=( 3)/4 的平方根	$\sin (\frac{π}{3}) \cos (\frac{π}{3}) = \frac{\sqrt{3}}{4}$
29853	判断是否为真	cos(30)=7/14	$\cos (30) = \frac{7}{14}$
29854	判断是否为真	8((1-cos(1)^2)/(cos(1)^2))=8cot(1)^2	$8 (\frac{1 - \cos^{2} (1)}{\cos^{2} (1)}) = 8 \cot^{2} (1)$
29855	判断是否为真	sin((3pi)/4)-cos((2(3pi))/4)=0	$\sin (\frac{3 π}{4}) - \cos (\frac{2 (3 π)}{4}) = 0$
29856	判断是否为真	sin((3pi)/9)=sin((5pi)/9)	$\sin (\frac{3 π}{9}) = \sin (\frac{5 π}{9})$
29857	判断是否为真	sin(-(4pi)/3)=sin(pi/3)	$\sin (- \frac{4 π}{3}) = \sin (\frac{π}{3})$
29858	判断是否为真	sin(52.5/2) = square root of (1+cos(35))/2	$\sin (\frac{52.5}{2}) = \sqrt{\frac{1 + \cos (35)}{2}}$
29859	判断是否为真	sin((5pi)/3)=sin(350)	$\sin (\frac{5 π}{3}) = \sin (350)$
29860	判断是否为真	sin(-(67pi)/6)=-1/2	$\sin (- \frac{67 π}{6}) = - \frac{1}{2}$
29861	判断是否为真	sin((6pi)/9)=sin((5pi)/9)	$\sin (\frac{6 π}{9}) = \sin (\frac{5 π}{9})$
29862	判断是否为真	sin(75/2) = square root of (1cos(75))/2	$\sin (\frac{75}{2}) = \sqrt{\frac{1 \cos (75)}{2}}$
29863	判断是否为真	sin(42)=0.17cos(42)	$\sin (42) = 0.17 \cos (42)$
29864	判断是否为真	sin(42)=26/18	$\sin (42) = \frac{26}{18}$
29865	判断是否为真	sin(420)	$\sin (420)$
29866	判断是否为真	sin(420)=( 3)/2 的平方根	$\sin (420) = \frac{\sqrt{3}}{2}$
29867	判断是否为真	sin(44)=cos(46)	$\sin (44) = \cos (46)$
29868	判断是否为真	sin(45)+cos(45)=sec(45)+tan(45)	$\sin (45) + \cos (45) = \sec (45) + \tan (45)$
29869	判断是否为真	sin(45)=7/( 58) 的平方根	$\sin (45) = \frac{7}{\sqrt{58}}$
29870	判断是否为真	sin(45) = square root of 2/2	$\sin (45) = \sqrt{\frac{2}{2}}$
29871	判断是否为真	sin(45) = square root of 1-(cos(45))/2	$\sin (45) = \sqrt{1 - \frac{\cos (45)}{2}}$
29872	判断是否为真	sin(45)=0.9	$\sin (45) = 0.9$
29873	判断是否为真	sin(45)=cos(45)	$\sin (45) = \cos (45)$
29874	判断是否为真	sin(45)=sin(135)	$\sin (45) = \sin (135)$
29875	判断是否为真	sin(45)-cos(45)=0	$\sin (45) - \cos (45) = 0$
29876	判断是否为真	sin(45)cos(56)=0.707	$\sin (45) \cos (56) = 0.707$
29877	判断是否为真	sin(45)=0.707106	$\sin (45) = 0.707106$
29878	判断是否为真	sin(48)=0.17*cos(48)	$\sin (48) = 0.17 \cdot \cos (48)$
29879	判断是否为真	sin(5)=0	$\sin (5) = 0$
29880	判断是否为真	sin(-5)=-sin(5)	$\sin (- 5) = - \sin (5)$
29881	判断是否为真	sin(-50)=sin(50)	$\sin (- 50) = \sin (50)$
29882	判断是否为真	sin(-51.3)=-sin(51.3)	$\sin (- 51.3) = - \sin (51.3)$
29883	判断是否为真	sin(255)cos(15)-cos(255)sin(15)=( 3)/2 的平方根	$\sin (255) \cos (15) - \cos (255) \sin (15) = \frac{\sqrt{3}}{2}$
29884	判断是否为真	sin(26)<sin(44)	$\sin (26) < \sin (44)$
29885	判断是否为真	sin(27)<sin(38)	$\sin (27) < \sin (38)$
29886	判断是否为真	sin(270)*cot(270)=1/2	$\sin (270) \cdot \cot (270) = \frac{1}{2}$
29887	判断是否为真	sin(270)=sin(90)	$\sin (270) = \sin (90)$
29888	判断是否为真	sin(2pi)+sin(pi)-cos(pi)-1=0	$\sin (2 π) + \sin (π) - \cos (π) - 1 = 0$
29889	判断是否为真	sin(2pi)=13/18	$\sin (2 π) = \frac{13}{18}$
29890	判断是否为真	sin(-2pi)=1	$\sin (- 2 π) = 1$
29891	判断是否为真	sin(3(0.79))=sin(0.79)	$\sin (3 (0.79)) = \sin (0.79)$
29892	判断是否为真	sin(3(1.56))=sin(1.57)	$\sin (3 (1.56)) = \sin (1.57)$
29893	判断是否为真	sin(3(11)+13)=cos(4(11))	$\sin (3 (11) + 13) = \cos (4 (11))$
29894	判断是否为真	sin(30)+sin(60)=sin(30+60)	$\sin (30) + \sin (60) = \sin (30 + 60)$
29895	判断是否为真	sin(30)=( 1)/2 的平方根	$\sin (30) = \frac{\sqrt{1}}{2}$
29896	判断是否为真	sin(30)=3/5	$\sin (30) = \frac{3}{5}$
29897	判断是否为真	sin(30)=4/5	$\sin (30) = \frac{4}{5}$
29898	判断是否为真	sin(30)=4/8	$\sin (30) = \frac{4}{8}$
29899	判断是否为真	sin(30)=0.5	$\sin (30) = 0.5$
29900	判断是否为真	sin(30)=0.9	$\sin (30) = 0.9$