Mathway | 热门问题

热门问题

等级	主题	问题	格式化的问题
11701	化简	cos(55)cos(35)-sin(55)sin(35)	$\cos (55) \cos (35) - \sin (55) \sin (35)$
11702	化简	cos(64)	$\cos (64)$
11703	化简	cos(62)	$\cos (62)$
11704	化简	cos(660)	$\cos (660)$
11705	化简	cos(5x)-cos(2x)	$\cos (5 x) - \cos (2 x)$
11706	化简	cos(60+A)+cos(60-A)	$\cos (60 + A) + \cos (60 - A)$
11707	化简	cos(67.5)	$\cos (67.5)$
11708	व्रत-खंड III में अन्य त्रिकोणमितीय मानों का पता लगाए	sec(theta)=-3	$\sec (θ) = - 3$
11709	化简	cos(60)cos(45)-sin(60)sin(45)	$\cos (60) \cos (45) - \sin (60) \sin (45)$
11710	化简	cos(6x)+cos(8x)	$\cos (6 x) + \cos (8 x)$
11711	化简	cos(6x)-cos(2x)	$\cos (6 x) - \cos (2 x)$
11712	化简	cos(-585)	$\cos (- 585)$
11713	化简	cos(55)	$\cos (55)$
11714	化简	cos(57)cos(78)-sin(57)sin(78)	$\cos (57) \cos (78) - \sin (57) \sin (78)$
11715	化简	cos(60)*2	$\cos (60) \cdot 2$
11716	化简	cos(80)cos(20)+sin(80)sin(20)	$\cos (80) \cos (20) + \sin (80) \sin (20)$
11717	化简	cos(8x)+cos(2x)	$\cos (8 x) + \cos (2 x)$
11718	化简	cos(90)+tan(45)	$\cos (90) + \tan (45)$
11719	化简	cos(90-a)	$\cos (90 - a)$
11720	化简	cos(900)	$\cos (900)$
11721	化简	cos(90)+3sin(270)	$\cos (90) + 3 \sin (270)$
11722	化简	cos(80)cos(70)+sin(80)sin(70)	$\cos (80) \cos (70) + \sin (80) \sin (70)$
11723	化简	cos(870)-sin(780)	$\cos (870) - \sin (780)$
11724	化简	cos(88)	$\cos (88)$
11725	化简	(cos(A)*4)/10	$\frac{\cos (A) \cdot 4}{10}$
11726	化简	cos(a+pi)	$\cos (a + π)$
11727	化简	cos(a-b)cos(b)-sin(a-b)sin(b)	$\cos (a - b) \cos (b) - \sin (a - b) \sin (b)$
11728	化简	cos(a+b)*cos(a-b)	$\cos (a + b) \cdot \cos (a - b)$
11729	化简	cos(9x)	$\cos (9 x)$
11730	化简	cos(a)	$\cos (a)$
11731	化简	cos(a+(3pi)/2)	$\cos (a + \frac{3 π}{2})$
11732	化简	cos(69)	$\cos (69)$
11733	化简	cos(675)	$\cos (675)$
11734	化简	cos(6x)cos(3x)-sin(6x)sin(3x)	$\cos (6 x) \cos (3 x) - \sin (6 x) \sin (3 x)$
11735	化简	cos(7x)cos(4x)-sin(7x)sin(4x)	$\cos (7 x) \cos (4 x) - \sin (7 x) \sin (4 x)$
11736	化简	cos(75)cos(15)-sin(75)sin(15)	$\cos (75) \cos (15) - \sin (75) \sin (15)$
11737	化简	cos(74)cos(44)+sin(74)sin(44)	$\cos (74) \cos (44) + \sin (74) \sin (44)$
11738	化简	cos(70)	$\cos (70)$
11739	化简	cos(8x)-sin(4x)	$\cos (8 x) - \sin (4 x)$
11740	化简	cos(8)	$\cos (8)$
11741	化简	cos(80)cos(20)-sin(80)sin(20)	$\cos (80) \cos (20) - \sin (80) \sin (20)$
11742	化简	cos(82)	$\cos (82)$
11743	化简	cos(78)cos(12)+sin(12)sin(78)	$\cos (78) \cos (12) + \sin (12) \sin (78)$
11744	化简	cos(-765)	$\cos (- 765)$
11745	化简	cos(7x)cos(3x)+sin(7x)sin(3x)	$\cos (7 x) \cos (3 x) + \sin (7 x) \sin (3 x)$
11746	化简	(cos(b)*4)/5	$\frac{\cos (b) \cdot 4}{5}$
11747	化简	cos(c)	$\cos (c)$
11748	化简	cos(-pi)+cot(-pi/2)	$\cos (- π) + \cot (- \frac{π}{2})$
11749	化简	cos(pi)cos(x)-sin(pi)sin(x)	$\cos (π) \cos (x) - \sin (π) \sin (x)$
11750	化简	cos(pi)sin((7pi)/4)-tan((11pi)/6)	$\cos (π) \sin (\frac{7 π}{4}) - \tan (\frac{11 π}{6})$
11751	化简	cos(arctan(1))	$\cos (\arctan (1))$
11752	化简	cos(arcsin(x/4))	$\cos (\arcsin (\frac{x}{4}))$
11753	化简	cos(arctan(3/4)-arcsin(4/5))	$\cos (\arctan (\frac{3}{4}) - \arcsin (\frac{4}{5}))$
11754	化简	cos(arctan(4/x))	$\cos (\arctan (\frac{4}{x}))$
11755	化简	cos(arccos(x)-arcsin(x))	$\cos (\arccos (x) - \arcsin (x))$
11756	化简	cos(arccsc(x/2))	$\cos (arccsc (\frac{x}{2}))$
11757	化简	cos(arccos(4/5))	$\cos (\arccos (\frac{4}{5}))$
11758	化简	cos(arccos(-1))	$\cos (\arccos (- 1))$
11759	化简	cos(arcsec(x))	$\cos (arcsec (x))$
11760	化简	cos(arcsin(1/2))	$\cos (\arcsin (\frac{1}{2}))$
11761	化简	cos(x)(csc(x)-sec(x)-cot(x))	$\cos (x) (\csc (x) - \sec (x) - \cot (x))$
11762	化简	cos(x)(csc(x)-tan(x))	$\cos (x) (\csc (x) - \tan (x))$
11763	化简	cos(x)(cos(x)-sec(x))	$\cos (x) (\cos (x) - \sec (x))$
11764	化简	cos(x)(4cos(x)^2-3)	$\cos (x) (4 \cos^{2} (x) - 3)$
11765	化简	cos(x)*(cos(x))/(sin(x))	$\cos (x) \cdot \frac{\cos (x)}{\sin (x)}$
11766	化简	cos(u)+tan(u)sin(u)	$\cos (u) + \tan (u) \sin (u)$
11767	化简	cos(pi+0)	$\cos (π + 0)$
11768	化简	cos(sin(2/5))	$\cos (\sin (\frac{2}{5}))$
11769	化简	cos(x)*cot(x)+sin(x)	$\cos (x) \cdot \cot (x) + \sin (x)$
11770	化简	cos(x)(cos(-x)-tan(-x))-sin(x)	$\cos (x) (\cos (- x) - \tan (- x)) - \sin (x)$
11771	化简	cos(-x)+cot(-x)	$\cos (- x) + \cot (- x)$
11772	化简	cos(x)+3	$\cos (x) + 3$
11773	化简	cos(x)*1+tan(x)^2	$\cos (x) \cdot 1 + \tan^{2} (x)$
11774	化简	cos(x)arcsin(x)	$\cos (x) \arcsin (x)$
11775	化简	cos(x)-cot(x)	$\cos (x) - \cot (x)$
11776	化简	cos(x)-cos(x)*sin(x)	$\cos (x) - \cos (x) \cdot \sin (x)$
11777	化简	cos(x+pi/6)+sin(x-pi/3)	$\cos (x + \frac{π}{6}) + \sin (x - \frac{π}{3})$
11778	化简	cos(x+y)cos(y)+sin(x+y)sin(y)	$\cos (x + y) \cos (y) + \sin (x + y) \sin (y)$
11779	化简	cos(x+y)*cos(x-y)	$\cos (x + y) \cdot \cos (x - y)$
11780	化简	cos(x+pi/4)	$\cos (x + \frac{π}{4})$
11781	化简	cos(x-180)	$\cos (x - 180)$
11782	化简	cos(x-2pi)	$\cos (x - 2 π)$
11783	化简	cos(x-(5pi)/4)	$\cos (x - \frac{5 π}{4})$
11784	化简	cot(540)	$\cot (540)$
11785	化简	cot(-60)	$\cot (- 60)$
11786	化简	cot(420)	$\cot (420)$
11787	化简	cot(495)	$\cot (495)$
11788	化简	cot((43pi)/6)+sin((28pi)/3)	$\cot (\frac{43 π}{6}) + \sin (\frac{28 π}{3})$
11789	化简	cot(480)	$\cot (480)$
11790	化简	cot(51)	$\cot (51)$
11791	化简	cot(-330)	$\cot (- 330)$
11792	化简	cot(38)	$\cot (38)$
11793	化简	cot(3)	$\cot (3)$
11794	化简	cot(290)	$\cot (290)$
11795	化简	cot(2pi)	$\cot (2 π)$
11796	化简	cot(-180)	$\cot (- 180)$
11797	化简	cot(210)	$\cot (210)$
11798	化简	cot(25)	$\cot (25)$
11799	化简	cot(270)-2sin(90)	$\cot (270) - 2 \sin (90)$
11800	化简	cot(260)	$\cot (260)$