Mathway | Problemi più comuni

Problemi più comuni

Livello	Argomento	Problema	Problema formattato
26401	求θ的弧度	tan(theta) = square root of 3	$\cos (2 x) + 8 \sin^{2} (x) = 4$
26402	求解x	cos(2x)=4/5	$\cos (2 x) = \frac{4}{5}$
26403	求解x	cos(20)+4sin(x)^2=2	$\cos (20) + 4 \sin^{2} (x) = 2$
26404	求解x	cos(25)=150/x	$\cos (25) = \frac{150}{x}$
26405	求解x	cos(2a)=1/4	$\cos (2 a) = \frac{1}{4}$
26406	求解x	cos(2x)+3cos(x)-1=0	$\cos (2 x) + 3 \cos (x) - 1 = 0$
26407	求解x	cos(2x)+3sin(x)=2	$\cos (2 x) + 3 \sin (x) = 2$
26408	求解x	cos(2x)+5sin(x)=-2	$\cos (2 x) + 5 \sin (x) = - 2$
26409	求解x	cos(2x)+9cos(x)+5=0	$\cos (2 x) + 9 \cos (x) + 5 = 0$
26410	求解x	cos(2x)+cos(x)=2	$\cos (2 x) + \cos (x) = 2$
26411	求解x	cos(x)=0.9	$\cos (x) = 0.9$
26412	求解x	cos(x)=-15	$\cos (x) = - 15$
26413	求解x	cos(x)sec(x)=1	$\cos (x) \sec (x) = 1$
26414	求解x	cos(x+30)-sin(x+60)=-sin(x)	$\cos (x + 30) - \sin (x + 60) = - \sin (x)$
26415	求解x	cos((4x)/3)=0.3	$\cos (\frac{4 x}{3}) = 0.3$
26416	求解x	cos((3pi)/2-A)=-sin(A)	$\cos (\frac{3 π}{2} - A) = - \sin (A)$
26417	求解x	cos(pi/2+x)-sin(pi/2+x)=0	$\cos (\frac{π}{2} + x) - \sin (\frac{π}{2} + x) = 0$
26418	求解x	cos(x/2) = square root of (1+cos(67.5))/2	$\cos (\frac{x}{2}) = \sqrt{\frac{1 + \cos (67.5)}{2}}$
26419	求解x	cos(2)x=( radice quadrata di 2)/2	$\cos (2) x = \frac{\sqrt{2}}{2}$
26420	求解x	cos(2x)+18sin(x)^2=13	$\cos (2 x) + 18 \sin^{2} (x) = 13$
26421	求解x	cos(2x)+3=5cos(x)	$\cos (2 x) + 3 = 5 \cos (x)$
26422	求解x	cos(x+pi/4)-1=cos(x-pi/4)	$\cos (x + \frac{π}{4}) - 1 = \cos (x - \frac{π}{4})$
26423	求解x	cos(x+1)=-cos(x)	$\cos (x + 1) = - \cos (x)$
26424	求解x	cos(x-1)=0	$\cos (x - 1) = 0$
26425	求解x	cos(x-y)cos(x+y)=cos(x)^2-sin(y)^2	$\cos (x - y) \cos (x + y) = \cos^{2} (x) - \sin^{2} (y)$
26426	求解x	cos(y)=( radice quadrata di 3)/2	$\cos (y) = \frac{\sqrt{3}}{2}$
26427	求解x	cos(z)=0.98	$\cos (z) = 0.98$
26428	求解x	cot(x)- radice quadrata di 3=0	$\cot (x) - \sqrt{3} = 0$
26429	求解x	cos(x)=( radice quadrata di 5)/3	$\cos (x) = \frac{\sqrt{5}}{3}$
26430	求解x	cos(2x+2/3*pi)=cos(2x-pi/12)	$\cos (2 x + \frac{2}{3} \cdot π) = \cos (2 x - \frac{π}{12})$
26431	求解x	cos(x)=150/350	$\cos (x) = \frac{150}{350}$
26432	求解x	cos(x)=2/5	$\cos (x) = \frac{2}{5}$
26433	求解x	cos(x)=-4/(2 radice quadrata di 5+ radice quadrata di 17)	$\cos (x) = \frac{- 4}{2 \sqrt{5} + \sqrt{17}}$
26434	求解x	cos(x)=4/6.7	$\cos (x) = \frac{4}{6.7}$
26435	求解x	cos(x)=0.1736	$\cos (x) = 0.1736$
26436	求解x	cos(x)=cos(2x)	$\cos (x) = \cos (2 x)$
26437	求解x	cos(x)=sec(x)	$\cos (x) = \sec (x)$
26438	求解x	cot(x)=1.4466474	$\cot (x) = 1.4466474$
26439	求解x	cot(30)=cos(x)	$\cot (30) = \cos (x)$
26440	求解x	cot(5x+2)=tan(2x+4)	$\cot (5 x + 2) = \tan (2 x + 4)$
26441	求解x	cot(x)(tan(x)-1)=0	$\cot (x) (\tan (x) - 1) = 0$
26442	求解x	cot(x)+1 = square root of 2csc(x)*8	$\cot (x) + 1 = \sqrt{2} \csc (x) \cdot 8$
26443	求解x	cot(x)+tan(x)=2/(sin(2x))	$\cot (x) + \tan (x) = \frac{2}{\sin (2 x)}$
26444	求解x	cot(x)sec(x)=2cot(x)	$\cot (x) \sec (x) = 2 \cot (x)$
26445	求解x	cot(x-10)=tan(4x)	$\cot (x - 10) = \tan (4 x)$
26446	求解x	csc(x)=-13/12	$\csc (x) = - \frac{13}{12}$
26447	求解x	csc(x)=pi/2	$\csc (x) = \frac{π}{2}$
26448	求解x	sec(x)=3	$\sec (x) = 3$
26449	求解x	cos(x)=0.65	$\cos (x) = 0.65$
26450	求解x	cot(x)=1/(tan(7/21))	$\cot (x) = \frac{1}{\tan (\frac{7}{21})}$
26451	求解x	cot(x)=5/7	$\cot (x) = \frac{5}{7}$
26452	求解x	csc(x)=sec(3x+66)	$\csc (x) = \sec (3 x + 66)$
26453	Semplificare	csc(theta)sin(theta)-sin(theta)^2	$\csc (θ) \sin (θ) - \sin^{2} (θ)$
26454	求解x	csc(x)-sin(x)=cot(x)cos(x)	$\csc (x) - \sin (x) = \cot (x) \cos (x)$
26455	求解x	csc((3pi)/4)=sin(x)	$\csc (\frac{3 π}{4}) = \sin (x)$
26456	求解x	csc(2x)=(csc(x))/(2cos(x))	$\csc (2 x) = \frac{\csc (x)}{2 \cos (x)}$
26457	求解x	csc(4x) = square root of 2	$\csc (4 x) = \sqrt{2}$
26458	求解x	csc(A-B)=(sin(A)cos(B)+cos(A)sin(B))/(sin(A)^2-sin(B)^2)	$\csc (A - B) = \frac{\sin (A) \cos (B) + \cos (A) \sin (B)}{\sin^{2} (A) - \sin^{2} (B)}$
26459	求解x	sin(x)=59/68.6	$\sin (x) = \frac{59}{68.6}$
26460	求解x	sin(x)=(5pi)/4	$\sin (x) = \frac{5 π}{4}$
26461	求解x	sin(x)=7/9	$\sin (x) = \frac{7}{9}$
26462	求解x	sin(x)=96/146	$\sin (x) = \frac{96}{146}$
26463	求解x	sin(x)=(9pi)/4	$\sin (x) = \frac{9 π}{4}$
26464	求解x	sin(x)=x/3	$\sin (x) = \frac{x}{3}$
26465	求解x	sin(x)=-0.03	$\sin (x) = - 0.03$
26466	求解x	sin(x)=0.69	$\sin (x) = 0.69$
26467	求解x	sin(x)=0.7218	$\sin (x) = 0.7218$
26468	求解x	sin(x)=0.7747	$\sin (x) = 0.7747$
26469	求解x	sin(x)=0.8203	$\sin (x) = 0.8203$
26470	求解x	sin(x)=0.8462	$\sin (x) = 0.8462$
26471	求解x	sin(x)=-0.8926	$\sin (x) = - 0.8926$
26472	求解x	sin(x)=315	$\sin (x) = 315$
26473	求解x	sin(x)=40	$\sin (x) = 40$
26474	求解x	sin(x)=cos(2x+45)	$\sin (x) = \cos (2 x + 45)$
26475	求解x	sin(x)=cos(2x+63)	$\sin (x) = \cos (2 x + 63)$
26476	求解x	sin(x)=sin((10pi)/7)	$\sin (x) = \sin (\frac{10 π}{7})$
26477	求解x	sin(x)cos(x)=cot(x)	$\sin (x) \cos (x) = \cot (x)$
26478	求解x	sin(x/2)=cos(x/2)	$\sin (\frac{x}{2}) = \cos (\frac{x}{2})$
26479	求解x	sin(17)m=sin(51)*40	$\sin (17) m = \sin (51) \cdot 40$
26480	求解x	sin(18)=19/x	$\sin (18) = \frac{19}{x}$
26481	求解x	sin(180-x)=(1-(cos(x)^2))/(sin(x))	$\sin (180 - x) = \frac{1 - (\cos^{2} (x))}{\sin (x)}$
26482	求解x	sin(19)=36/x	$\sin (19) = \frac{36}{x}$
26483	求解x	sin(2x)=(-1/2)	$\sin (2 x) = (- \frac{1}{2})$
26484	求解x	sin(2x)=3/5	$\sin (2 x) = \frac{3}{5}$
26485	求解x	sin(2x)=2(-20/29)cos(x)=21/29	$\sin (2 x) = 2 (- \frac{20}{29}) \cos (x) = \frac{21}{29}$
26486	求解x	sin(2x)=cos(2x)	$\sin (2 x) = \cos (2 x)$
26487	求解x	sin(2x)=cos(3x)	$\sin (2 x) = \cos (3 x)$
26488	求解x	sin(2x-pi/2)=-1	$\sin (2 x - \frac{π}{2}) = - 1$
26489	求解x	sin(2x+pi/2)=( radice quadrata di 2)/2	$\sin (2 x + \frac{π}{2}) = \frac{\sqrt{2}}{2}$
26490	求解x	sin(20)+cos(x)=0	$\sin (20) + \cos (x) = 0$
26491	求解x	sin(2A)=5/13	$\sin (2 A) = \frac{5}{13}$
26492	求解x	sin(2pi-x)=-sin(x)	$\sin (2 π - x) = - \sin (x)$
26493	求解x	sin(2t)-cos(t)+2sin(t)-1=0	$\sin (2 t) - \cos (t) + 2 \sin (t) - 1 = 0$
26494	求解x	sin(2x)+ radice quadrata di 2cos(x)=0	$\sin (2 x) + \sqrt{2 \cos (x)} = 0$
26495	求解x	sec(x+15)=csc(20+9)	$\sec (x + 15) = \csc (20 + 9)$
26496	求解x	sec(x+81)=2	$\sec (x + 81) = 2$
26497	求解x	sec((3x)/2)=-2	$\sec (\frac{3 x}{2}) = - 2$
26498	求解x	sec((5x)/4)=2	$\sec (\frac{5 x}{4}) = 2$
26499	求解x	sec(pi/2-u)=csc(u)	$\sec (\frac{π}{2} - u) = \csc (u)$
26500	求解x	sec(2x)=(sec(x)^2csc(x)^2)/(csc(x)^2-sec(x)^2)	$\sec (2 x) = \frac{\sec^{2} (x) \csc^{2} (x)}{\csc^{2} (x) - \sec^{2} (x)}$