Prove the trigonometric identities $\\cot(x)- \\cot(2x) =\\csc(2x)$
2015年7月20日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …
algebra precalculus - Solving $\tan^4 x+\cot^4 x+\cot2x=2 ...
2020年4月19日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …
how to prove $\\cot^2x = \\cos^2x+(\\cot x \\cos x)^2?$
The left-hand side can be rewritten as $$ \begin{align} \cot^2(x)&=\frac{1}{\tan^2(x)}\\ &=\frac{\cos^2(x)}{\sin^2(x)}. \end{align} $$
trigonometry - Proving $2\cot4x = \cot2x - \tan2x
2020年10月17日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …
How to proceed from $\\cot(x)\\cot(2x)-\\cot(2x)\\cot(3x)-\\cot(3x ...
2016年2月10日 · To prove: $\\cot(x)\\cot(2x)-\\cot(2x)\\cot(3x)-\\cot(3x)\\cot(x) = 1$ My attempt at the solution: \\begin{gather}\\frac{\\cos(x)\\cos(2x)}{\\sin(x)\\sin(2x)}-\\frac ...
How to prove $\\cot ^2x+\\sec ^2x=\\tan ^2x+\\csc ^2x$?
How can I prove the following equation? \begin{eqnarray} \cot ^2x+\sec ^2x &=& \tan ^2x+\csc ^2x\\ {{1}\over{\tan^2x}}+{{1}\over{\cos^2x}} &=& {{\sin^2x}\over ...
How to prove $\\csc^{2}(x)-\\cot^{2}(x)+\\tan^{2}(x)=\\sec^{2}(x)$?
2021年11月3日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …
How do I evaluate $\\int \\cot^2x$? - Mathematics Stack Exchange
2015年1月25日 · The first thing I would suggest to learn is the Weierstrass substitution.It is a way to reduce all integrals of rational functions of $\sin(x)$ and $\cos(x)$ to the integral of a rational …
How do you integrate #int (tan2x+cot2x)^2# using substitution?
2017年3月28日 · =1/2tan 2x-1/2cot2x+C There is no need to use substitution, it makes the integral more difficult. Simple trig identities will reduce to it to something more manageable …
trigonometry - Solve $\tan^22x+\cot^22x+2\tan2x+2\cot2x=6 ...
2019年11月3日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …