36. If sin alpha + sin beta is equal to a and cos alpha + cos beta is equal to b then find value of cos alpha + beta and sin alpha + beta
![SOLVED:Prove that the equations are identities. (cosαcosβ-sinαsinβ)(cosαcosβ+sinαsinβ) =cos^2 α-sin^2 β SOLVED:Prove that the equations are identities. (cosαcosβ-sinαsinβ)(cosαcosβ+sinαsinβ) =cos^2 α-sin^2 β](https://cdn.numerade.com/previews/06a41435-15db-4a8c-bb0d-afe8c134d41d_large.jpg)
SOLVED:Prove that the equations are identities. (cosαcosβ-sinαsinβ)(cosαcosβ+sinαsinβ) =cos^2 α-sin^2 β
![If `x = cos alpha + cos beta - cos(alpha +beta)` and `y = 4 sin \'(alpha)/(2) sin\'(beta)/(2 - YouTube If `x = cos alpha + cos beta - cos(alpha +beta)` and `y = 4 sin \'(alpha)/(2) sin\'(beta)/(2 - YouTube](https://i.ytimg.com/vi/C6WpLmKideY/maxresdefault.jpg)
If `x = cos alpha + cos beta - cos(alpha +beta)` and `y = 4 sin \'(alpha)/(2) sin\'(beta)/(2 - YouTube
![linear algebra - why $\cos\alpha\cos\beta+\sin\alpha\sin\beta=\cos(\beta - \ alpha)$? - Mathematics Stack Exchange linear algebra - why $\cos\alpha\cos\beta+\sin\alpha\sin\beta=\cos(\beta - \ alpha)$? - Mathematics Stack Exchange](https://i.stack.imgur.com/zoK2C.png)
linear algebra - why $\cos\alpha\cos\beta+\sin\alpha\sin\beta=\cos(\beta - \ alpha)$? - Mathematics Stack Exchange
![If `sin alpha + sin beta = a and cos alpha + cos beta =b`, show that `sin( alpha+beta)=(2ab)/(... - YouTube If `sin alpha + sin beta = a and cos alpha + cos beta =b`, show that `sin( alpha+beta)=(2ab)/(... - YouTube](https://i.ytimg.com/vi/1kI4dPKJoZo/maxresdefault.jpg)
If `sin alpha + sin beta = a and cos alpha + cos beta =b`, show that `sin( alpha+beta)=(2ab)/(... - YouTube
![trigonometry - Trigonometric identity $2\cos(\alpha)\cos(\beta) = \cos(\ alpha + \beta) + \cos(\beta - \alpha)$ in a book. Is it correct? - Mathematics Stack Exchange trigonometry - Trigonometric identity $2\cos(\alpha)\cos(\beta) = \cos(\ alpha + \beta) + \cos(\beta - \alpha)$ in a book. Is it correct? - Mathematics Stack Exchange](https://i.stack.imgur.com/BIywl.jpg)
trigonometry - Trigonometric identity $2\cos(\alpha)\cos(\beta) = \cos(\ alpha + \beta) + \cos(\beta - \alpha)$ in a book. Is it correct? - Mathematics Stack Exchange
![Find the value of 1 & cos(beta - alpha ) & cos(Υ - alpha ) cos(alpha - beta ) & 1 & cos(Υ - beta ) cos(alpha - Υ ) & cos(beta - Υ ) & 1 Find the value of 1 & cos(beta - alpha ) & cos(Υ - alpha ) cos(alpha - beta ) & 1 & cos(Υ - beta ) cos(alpha - Υ ) & cos(beta - Υ ) & 1](https://haygot.s3.amazonaws.com/questions/2020559_1049555_ans_cbe13c7d2fbf4fd99e9d78f59325804f.jpg)
Find the value of 1 & cos(beta - alpha ) & cos(Υ - alpha ) cos(alpha - beta ) & 1 & cos(Υ - beta ) cos(alpha - Υ ) & cos(beta - Υ ) & 1
![Prove: cos alpha + cos beta + cos gama + cos ( alpha + beta + gama) = 4 cos - Maths - Trigonometric Functions - 11411949 | Meritnation.com Prove: cos alpha + cos beta + cos gama + cos ( alpha + beta + gama) = 4 cos - Maths - Trigonometric Functions - 11411949 | Meritnation.com](https://s3mn.mnimgs.com/img/shared/discuss_editlive/6019105/2013_12_08_11_04_22/mathmlequation8931379572804605096.png)
Prove: cos alpha + cos beta + cos gama + cos ( alpha + beta + gama) = 4 cos - Maths - Trigonometric Functions - 11411949 | Meritnation.com
![Cos alpha minus cos beta whole square plus sin alpha minus sin beta whole square is equal to k sin - Brainly.in Cos alpha minus cos beta whole square plus sin alpha minus sin beta whole square is equal to k sin - Brainly.in](https://hi-static.z-dn.net/files/d53/9585acf1a265132de45e63b547222bac.jpg)
Cos alpha minus cos beta whole square plus sin alpha minus sin beta whole square is equal to k sin - Brainly.in
![If sin alpha + sin beta = a and cos alpha + cos beta = b, show that sin ( alpha + beta ) = 2aba^2 + b^2 If sin alpha + sin beta = a and cos alpha + cos beta = b, show that sin ( alpha + beta ) = 2aba^2 + b^2](https://haygot.s3.amazonaws.com/questions/1410364_1664494_ans_1e09334e501c45fcb3a72a69fc57af59.jpg)
If sin alpha + sin beta = a and cos alpha + cos beta = b, show that sin ( alpha + beta ) = 2aba^2 + b^2
![Prove that for all `ninN` `Cosalpha+cos(alpha+beta)+cos(alpha+2beta)+ . . . +cos[alpha+(n-1)beta]` - YouTube Prove that for all `ninN` `Cosalpha+cos(alpha+beta)+cos(alpha+2beta)+ . . . +cos[alpha+(n-1)beta]` - YouTube](https://i.ytimg.com/vi/aJf5I3I-xVY/maxresdefault.jpg)
Prove that for all `ninN` `Cosalpha+cos(alpha+beta)+cos(alpha+2beta)+ . . . +cos[alpha+(n-1)beta]` - YouTube
![SOLVED: Complete the identity. cos(alpha-beta)/cos alpha cos beta= A. 1+cot alpha tan beta B.tan alpha tan beta+cot beta C. 1+tan alpha tan beta D. 1+cot alpha cot beta SOLVED: Complete the identity. cos(alpha-beta)/cos alpha cos beta= A. 1+cot alpha tan beta B.tan alpha tan beta+cot beta C. 1+tan alpha tan beta D. 1+cot alpha cot beta](https://cdn.numerade.com/ask_previews/2a1b9ad7-350c-4458-93e6-91ba5d463fed_large.jpg)
SOLVED: Complete the identity. cos(alpha-beta)/cos alpha cos beta= A. 1+cot alpha tan beta B.tan alpha tan beta+cot beta C. 1+tan alpha tan beta D. 1+cot alpha cot beta
If sin alpha + sin beta =1/3 and cos alpha +cos beta =1/4, then what is the value of cos (alpha +beta)? - Quora
![If `cos alpha, cos beta, cos gamma` are the direction cosine of a line, then find the value of - YouTube If `cos alpha, cos beta, cos gamma` are the direction cosine of a line, then find the value of - YouTube](https://i.ytimg.com/vi/CluoTXQf78g/maxresdefault.jpg)