If sin alpha + sin beta =1/3 and cos alpha +cos beta =1/4, then what is the value of cos (alpha +beta)? - Quora
![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 = 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
![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)
If `cos alpha, cos beta, cos gamma` are the direction cosine of a line, then find the value of - YouTube
![If sin alpha + sin beta + sin gamma = cos alpha + cos beta + cos gamma then what is the value of cos^2 alpha + cos^2 beta + cos^2 gamma ? | Socratic If sin alpha + sin beta + sin gamma = cos alpha + cos beta + cos gamma then what is the value of cos^2 alpha + cos^2 beta + cos^2 gamma ? | Socratic](https://useruploads.socratic.org/E13ICBxURLKrJzyqGWAl_socratic.png)
If sin alpha + sin beta + sin gamma = cos alpha + cos beta + cos gamma then what is the value of cos^2 alpha + cos^2 beta + cos^2 gamma ? | Socratic
![If |{:(1,cos alpha, cos beta),(cos alpha, 1 , cos gamma ),(cos beta, cos gamma , 1):}|=|{:(0,cos alpha, cos beta),(cos alpha , 0 , cos gamma),(cos beta, cos gamma, 0):}| then the value If |{:(1,cos alpha, cos beta),(cos alpha, 1 , cos gamma ),(cos beta, cos gamma , 1):}|=|{:(0,cos alpha, cos beta),(cos alpha , 0 , cos gamma),(cos beta, cos gamma, 0):}| then the value](https://d10lpgp6xz60nq.cloudfront.net/ss/web/3225661.jpg)
If |{:(1,cos alpha, cos beta),(cos alpha, 1 , cos gamma ),(cos beta, cos gamma , 1):}|=|{:(0,cos alpha, cos beta),(cos alpha , 0 , cos gamma),(cos beta, cos gamma, 0):}| then the value
![Prove that cos alpha+cos beta + cos gamma + cos (alpha+ beta + gamma) = 4 cos alpha + beta/2 - Maths - - 11669379 | Meritnation.com Prove that cos alpha+cos beta + cos gamma + cos (alpha+ beta + gamma) = 4 cos alpha + beta/2 - Maths - - 11669379 | Meritnation.com](https://s3mn.mnimgs.com/img/shared/content_ck_images/ck_59a0788294f7c.png)
Prove that cos alpha+cos beta + cos gamma + cos (alpha+ beta + gamma) = 4 cos alpha + beta/2 - Maths - - 11669379 | Meritnation.com
![Cos alpha minus cos beta whole square plus sin alpha minus sin beta whole square is equal to k sin square - Brainly.in Cos alpha minus cos beta whole square plus sin alpha minus sin beta whole square is equal to k sin square - 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 square - Brainly.in
What will be the value of cos (alpha-beta) when sin alpha + sin beta=cos gamma and cos alpha + cos beta=sin gamma? - Quora
![if cos alpha+cos beta+cos gamma =3 then evaluate sin alpha+sin beta+sin gamma - Maths - Trigonometric Functions - 13704086 | Meritnation.com if cos alpha+cos beta+cos gamma =3 then evaluate sin alpha+sin beta+sin gamma - Maths - Trigonometric Functions - 13704086 | Meritnation.com](https://s3mn.mnimgs.com/img/shared/content_ck_images/ck_5d08d66dc36de.jpg)
if cos alpha+cos beta+cos gamma =3 then evaluate sin alpha+sin beta+sin gamma - Maths - Trigonometric Functions - 13704086 | Meritnation.com
![trigonometry - $2 \cos \alpha \cos \beta = \cos( \alpha + \beta) + \cos(\ alpha −\beta)$ - Mathematics Stack Exchange trigonometry - $2 \cos \alpha \cos \beta = \cos( \alpha + \beta) + \cos(\ alpha −\beta)$ - Mathematics Stack Exchange](https://i.stack.imgur.com/kZbOv.jpg)
trigonometry - $2 \cos \alpha \cos \beta = \cos( \alpha + \beta) + \cos(\ alpha −\beta)$ - Mathematics Stack Exchange
![If cos alpha/cos beta=m and cos alpha/sin beta=, then prove that (m^2+n^2)c0s^2 beta=n^2. - Brainly.in If cos alpha/cos beta=m and cos alpha/sin beta=, then prove that (m^2+n^2)c0s^2 beta=n^2. - Brainly.in](https://hi-static.z-dn.net/files/d80/e6386ce44dd5c0f6d58eacebb38ccdcb.jpg)
If cos alpha/cos beta=m and cos alpha/sin beta=, then prove that (m^2+n^2)c0s^2 beta=n^2. - Brainly.in
![If `alpha + beta = gamma` prove that `cos^2 alpha+ cos^2 beta+cos^2gamma=1+2cos alpha cos beta... - YouTube If `alpha + beta = gamma` prove that `cos^2 alpha+ cos^2 beta+cos^2gamma=1+2cos alpha cos beta... - YouTube](https://i.ytimg.com/vi/0nNEgFvnv6o/maxresdefault.jpg)