Mathway | 热门问题

热门问题

等级	主题	问题	格式化的问题
4101	求基准角	-105 次数	$- 105 °$
4102	求基准角	220	$220$
4103	求基准角	230	$230$
4104	求基准角	-225	$- 225$
4105	求出精确值	sec(270)	$\sec (270)$
4106	求基准角	-2	$- 2$
4107	求基准角	15	$15$
4108	求基准角	165	$165$
4109	求基准角	-160	$- 160$
4110	求基准角	420	$420$
4111	求基准角	420 次数	$420 °$
4112	求基准角	447	$447$
4113	求基准角	-45 次数	$- 45 °$
4114	求基准角	-30	$- 30$
4115	求基准角	-110 次数	$- 110 °$
4116	求基准角	315 次数	$315 °$
4117	求出精确值	sec(-300 次数 )	$\sec (- 300 °)$
4118	求出精确值	sin(2*pi/3)	$\sin (2 \cdot \frac{π}{3})$
4119	求基准角	285	$285$
4120	求基准角	250	$250$
4121	求出补集	(3pi)/8	$\frac{3 π}{8}$
4122	求出补集	3	$3$
4123	求出补集	0.5	$0.5$
4124	求出补集	(5pi)/12	$\frac{5 π}{12}$
4125	求出补集	150 次数	$150 °$
4126	求补角	50 次数	$50 °$
4127	求补角	(11pi)/12	$\frac{11 π}{12}$
4128	求补角	(5pi)/12	$\frac{5 π}{12}$
4129	求补角	(7pi)/4	$\frac{7 π}{4}$
4130	求补角	pi/10	$\frac{π}{10}$
4131	求基准角	70	$70$
4132	求基准角	90 次数	$90 °$
4133	求基准角	-60	$- 60$
4134	求基准角	6	$6$
4135	求基准角	cos(120)	$\cos (120)$
4136	求基准角	cos(75)	$\cos (75)$
4137	求基准角	tan(405)	$\tan (405)$
4138	检验恒等式	(cos(a-b))/(cos(a)sin(b))=tan(a)+cot(b)	$\frac{\cos (a - b)}{\cos (a) \sin (b)} = \tan (a) + \cot (b)$
4139	检验恒等式	1/(1-cos(x))+1/(1+cos(x))=2csc(x)^2	$\frac{1}{1 - \cos (x)} + \frac{1}{1 + \cos (x)} = 2 \csc^{2} (x)$
4140	检验恒等式	(1+cos(x))/(1-cos(x))-(1-cos(x))/(1+cos(x))=4cot(x)csc(x)	$\frac{1 + \cos (x)}{1 - \cos (x)} - \frac{1 - \cos (x)}{1 + \cos (x)} = 4 \cot (x) \csc (x)$
4141	检验恒等式	1/(sec(x)tan(x))=csc(x)-sin(x)	$\frac{1}{\sec (x) \tan (x)} = \csc (x) - \sin (x)$
4142	检验恒等式	(1-cos(x))/(sin(x))=(sin(x))/(1+cos(x))	$\frac{1 - \cos (x)}{\sin (x)} = \frac{\sin (x)}{1 + \cos (x)}$
4143	检验恒等式	(1-cos(x))/(sin(x))=csc(x)-cot(x)	$\frac{1 - \cos (x)}{\sin (x)} = \csc (x) - \cot (x)$
4144	检验恒等式	(sec(x)-1)(sec(x)+1)=tan(x)^2	$(\sec (x) - 1) (\sec (x) + 1) = \tan^{2} (x)$
4145	检验恒等式	(5sin(x)+5cos(x))^2=25+25sin(2x)	${(5 \sin (x) + 5 \cos (x))}^{2} = 25 + 25 \sin (2 x)$
4146	检验恒等式	(sin(x)+cos(x))^2=1+2sin(x)cos(x)	${(\sin (x) + \cos (x))}^{2} = 1 + 2 \sin (x) \cos (x)$
4147	检验恒等式	(tan(x)*sin(x))/(sec(x)^2-1)=cos(x)	$\frac{\tan (x) \cdot \sin (x)}{\sec^{2} (x) - 1} = \cos (x)$
4148	检验恒等式	(cot(x)^2)/(csc(x))=csc(x)-sin(x)	$\frac{\cot^{2} (x)}{\csc (x)} = \csc (x) - \sin (x)$
4149	检验恒等式	(tan(x)^2cos(x))/(2sec(x))=1/2*sin(x)^2	$\frac{\tan^{2} (x) \cos (x)}{2 \sec (x)} = \frac{1}{2} \cdot \sin^{2} (x)$
4150	检验恒等式	(sec(x)^2)/(tan(x))=sec(x)csc(x)	$\frac{\sec^{2} (x)}{\tan (x)} = \sec (x) \csc (x)$
4151	检验恒等式	cos(x)+sin(x)tan(x)=sec(x)	$\cos (x) + \sin (x) \tan (x) = \sec (x)$
4152	检验恒等式	csc(2x)=(csc(x))/(2cos(x))	$\csc (2 x) = \frac{\csc (x)}{2 \cos (x)}$
4153	检验恒等式	csc(x)(2sin(x)- 2)=0 的平方根	$\csc (x) (2 \sin (x) - \sqrt{2}) = 0$
4154	检验恒等式	cot(pi/2-x)=tan(x)	$\cot (\frac{π}{2} - x) = \tan (x)$
4155	检验恒等式	cos(x+y)cos(x-y)=cos(x)^2-sin(y)^2	$\cos (x + y) \cos (x - y) = \cos^{2} (x) - \sin^{2} (y)$
4156	检验恒等式	cos(x)cot(x)+sin(x)=csc(x)	$\cos (x) \cot (x) + \sin (x) = \csc (x)$
4157	检验恒等式	cos(x)-(cos(x))/(1-tan(x))=(sin(x)cos(x))/(sin(x)-cos(x))	$\cos (x) - \frac{\cos (x)}{1 - \tan (x)} = \frac{\sin (x) \cos (x)}{\sin (x) - \cos (x)}$
4158	检验恒等式	(sec(x))/(tan(x))-(tan(x))/(sec(x))=cos(x)cot(x)	$\frac{\sec (x)}{\tan (x)} - \frac{\tan (x)}{\sec (x)} = \cos (x) \cot (x)$
4159	检验恒等式	(sin(3x))/(sin(x)cos(x))=4cos(x)-sec(x)	$\frac{\sin (3 x)}{\sin (x) \cos (x)} = 4 \cos (x) - \sec (x)$
4160	检验恒等式	csc(x)^2(1-cos(x)^2)=1	$\csc^{2} (x) (1 - \cos^{2} (x)) = 1$
4161	检验恒等式	(csc(x))/(sin(x))-(cot(x))/(tan(x))=1	$\frac{\csc (x)}{\sin (x)} - \frac{\cot (x)}{\tan (x)} = 1$
4162	检验恒等式	cot(x)^2-cos(x)^2=cot(x)^2cos(x)^2	$\cot^{2} (x) - \cos^{2} (x) = \cot^{2} (x) \cos^{2} (x)$
4163	检验恒等式	cos(x)^4-sin(x)^4=1-2sin(x)^2	$\cos^{4} (x) - \sin^{4} (x) = 1 - 2 \sin^{2} (x)$
4164	检验恒等式	tan(2x)^2+sin(2x)^2+cos(2x)^2=sec(2x)^2	$\tan^{2} (2 x) + \sin^{2} (2 x) + \cos^{2} (2 x) = \sec^{2} (2 x)$
4165	检验恒等式	(tan(x)-1)/(tan(x)+1)=(1-cot(x))/(1+cot(x))	$\frac{\tan (x) - 1}{\tan (x) + 1} = \frac{1 - \cot (x)}{1 + \cot (x)}$
4166	检验恒等式	13sec(x)sin(x)=13cot(x)tan(x)^2	$13 \sec (x) \sin (x) = 13 \cot (x) \tan^{2} (x)$
4167	检验恒等式	(tan(A))/(sec(A))=sin(A)	$\frac{\tan (A)}{\sec (A)} = \sin (A)$
4168	求出精确值	29/(tan(12))	$\frac{29}{\tan (12)}$
4169	检验恒等式	sin(t)tan(t)=(1-cos(t)^2)/(cos(t))	$\sin (t) \tan (t) = \frac{1 - \cos^{2} (t)}{\cos (t)}$
4170	检验恒等式	sin(x)*sec(x)=tan(x)	$\sin (x) \cdot \sec (x) = \tan (x)$
4171	检验恒等式	sin(3x)=-1	$\sin (3 x) = - 1$
4172	检验恒等式	sin(pi/2-x)tan(x)=sin(x)	$\sin (\frac{π}{2} - x) \tan (x) = \sin (x)$
4173	检验恒等式	sin(x)sec(x)cot(x)=1	$\sin (x) \sec (x) \cot (x) = 1$
4174	检验恒等式	sin(2x)+sin(x)=0	$\sin (2 x) + \sin (x) = 0$
4175	检验恒等式	sec(y)+tan(y)=(cos(y))/(1-sin(y))	$\sec (y) + \tan (y) = \frac{\cos (y)}{1 - \sin (y)}$
4176	检验恒等式	sin(x+2pi)=sin(x)	$\sin (x + 2 π) = \sin (x)$
4177	检验恒等式	tan(x/2)=csc(x)-cot(x)	$\tan (\frac{x}{2}) = \csc (x) - \cot (x)$
4178	检验恒等式	tan(x)(csc(x)-sin(x))=cos(x)	$\tan (x) (\csc (x) - \sin (x)) = \cos (x)$
4179	检验恒等式	tan(2pi-x)=-tan(x)	$\tan (2 π - x) = - \tan (x)$
4180	检验恒等式	tan(x)+sec(x)=(cos(x))/(1-sin(x))	$\tan (x) + \sec (x) = \frac{\cos (x)}{1 - \sin (x)}$
4181	检验恒等式	tan(x)cos(x)csc(x)=1	$\tan (x) \cos (x) \csc (x) = 1$
4182	检验恒等式	tan(x-pi)=tan(x)	$\tan (x - π) = \tan (x)$
4183	求出精确值	arcsin(1/5)	$\arcsin (\frac{1}{5})$
4184	求出精确值	arcsin(sin((2pi)/3))	$\arcsin (\sin (\frac{2 π}{3}))$
4185	求出精确值	arcsin(sin((4pi)/9))	$\arcsin (\sin (\frac{4 π}{9}))$
4186	求出精确值	cos(165)	$\cos (165)$
4187	求出精确值	cos(165 次数 )	$\cos (165 °)$
4188	求出精确值	arccos(-0.546)	$\arccos (- 0.546)$
4189	求出精确值	arccos(0.56)	$\arccos (0.56)$
4190	求出精确值	arccos(1/3)	$\arccos (\frac{1}{3})$
4191	求出精确值	arccos(pi/3)	$\arccos (\frac{π}{3})$
4192	求出精确值	arccos(cos(pi/3))	$\arccos (\cos (\frac{π}{3}))$
4193	求出精确值	arccos(sin(pi/3))	$\arccos (\sin (\frac{π}{3}))$
4194	求出精确值	cos(3/4)	$\cos (\frac{3}{4})$
4195	求出精确值	cos(-3/4)	$\cos (- \frac{3}{4})$
4196	求出精确值	cos((25pi)/3)	$\cos (\frac{25 π}{3})$
4197	求出精确值	cos((23pi)/12)	$\cos (\frac{23 π}{12})$
4198	求出精确值	cos(2/3*pi)	$\cos (\frac{2}{3} \cdot π)$
4199	求出精确值	cos(2/5)	$\cos (\frac{2}{5})$
4200	求出精确值	cos((16pi)/3)	$\cos (\frac{16 π}{3})$