由$$ \tan a + \cot a = \frac { 5 } { 2 } $$, 解得$$ \tan a = 2 $$, ∴$$ \frac { \sin ^ { 2 } a } { \cos ^ { 2 } a } = \frac { 1 - \cos ^ { 2 } a } { \cos ^ { 2 } a } = 4 $$, 解得$$ \cos a = \pm \frac { \sqrt...
Prove that (tan alpha+tan beta)/(cot alpha+cot beta)=tan alpha tan beta View Solution Iftanα+tanβcotα+cotβ+{cos(α−β)+1}−1=1,thentanαtanβis equal to View Solution यदि (If)tanα−tanβ=xऔरcotβ−cotα=y, साबित करें क...
【解析】由$$ \tan \alpha + \cot \alpha = 2 $$,得$$ \frac { \sin \alpha } { \cos \alpha } + \frac { \cos \alpha } { \sin \alpha } = 2 , $$ 即$$ \frac { 1 } { \sin \alpha \cos \alpha } = 2 $$C∴$$ \sin \alpha \cos \alpha = \frac { 1 ...
Answer to: Verify the following identity: (tan alpha + cot beta)/(tan alpha cot beta)=tan beta + cot alpha By signing up, you'll get thousands of...
Answer Step by step video & image solution for If tan alpha - tan beta =m and cot alpha - cot beta =n, then prove that cot ( alpha - beta )= (1)/(m)- (1)/(n) by Maths experts to help you in doubts & scoring excellent marks in Class 11 exams.Updated on:21/07/2023Class...
【解析】 ∵$$ : \tan \alpha \cdot \cot \alpha = 1 , \tan \alpha + \cot \alpha = 3 , $$ ∴$$ ( \tan \alpha + \cot \alpha ) ^ { 2 } = 9 $$, 即$$ \tan ^ { 2 } \alpha + \cot ^ { 2 } \alpha + 2 \tan \alpha \cdot \cot \alpha = 9 $$ ∴$...
(tan (45^(@) + alpha ) + tan ( 45^(@) - alpha ))/( cot (45^(@) + alpha ) + cot ( 45^(@) - alpha ))=
已知:tanalpha +cotalpha =2且0 alpha pi .求:left ( 1 right )sinalpha cosalpha ;left ( 2 r
Answer to: Verify: tan(alpha/2) = csc(alpha) - cot(alpha). By signing up, you'll get thousands of step-by-step solutions to your homework...
If P=[(secalpha,tanalpha),(-cotalpha,cosalpha)] and Q=[(-cosalpha,tanalpha),(-cotalpha,-secalpha)] , than 2P^-1+Q=