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If cot^(2)theta=cot(theta-alpha)cot(theta-beta), then show that cot2 theta=(1)/(2)[cot alpha+cot beta] View Solution Prove that (cot theta+csc theta-1)/(cot theta-csc theta)=(cot theta+csc theta)(cot theta+csc theta-1) View Solution Prove that (tan theta+cot theta+1)(tan...
sin(−x)=−sinxcos(−x)=cosxtan(−x)=−tanxsec(−x)=secxcsc(−x)=−cscxcot(−x)=−cotxsin(π/2−x)=cosxcos(π/2−x)=sinxsin(π/2+x)=cosxcos(π/2+x)=−sinxsin(3π/2...
【解析】 原式$$ \log _ { s i n \theta } ( 1 + \cot ^ { 2 } \theta ) = \log _ { s i n \theta } ( \frac { \sin ^ { 2 } \theta + \cos ^ { 2 } \theta } { \sin ^ { 2 } \theta } ) $$ $$ = \log _ { \sin \theta } ( \frac { 1 } ...
导函数: f(x)=cotx,f′(x)=(cosxsinx)′=−sin2x−cos2xsin2x=−1sin2x 余割 定义: 单位圆中cscθ=1sinθ=ry(单位圆中) 图像: 正割 定义: \sec\theta = \frac{1}{\cos\theta} = \frac{r}{x} 图像: 容易发现: secθ=csc(θ+π2) 正割、余割函数...
5.已知$$ \cot \theta = - \frac { 1 2 } { 5 } $$,且θ为第二象限角,则$$ \sin ( 8 \pi + \theta ) = \_ \cos ( - 6 \pi + \theta $$$ = . $$ 相关知识点: 试题来源: 解析 $$ 5 . \frac { 5 } { 1 3 } ; - \frac { 1 2 } { 1 3 } $$ 反馈...
Answer to: Verify the identity. sin^2 theta (1 + cot^2 theta) = 1 By signing up, you'll get thousands of step-by-step solutions to your homework...
Answer to: Prove that \cot \theta = \frac{1+ \cos 2\theta}{\sin 2\theta} By signing up, you'll get thousands of step-by-step solutions to your...
【解析】$$ c s c \theta - \cot \theta = \frac { 1 } { 2 } $$ $$ \frac { 1 - \cos \theta } { \sin \theta } = \frac { 1 } { 2 } $$ $$ \cos \theta = 1 - \frac { 1 } { 2 } \sin \theta $$ $$ ( \sin \theta ) ^ { 2 } + ( \cos \...
Iftan4θ=cot(2θ+30∘), thenθis equal to: यदिtan4θ=cot(2θ+30∘), है, तोθका मान ज्ञात करें | Find the value of (1 +cot^2 theta )(1-cos^2 theta ) (1 +cot^2 theta )(1-cos^2 theta ) का मान...