__maths__>__Advanced Trigonometry__>__Trigonometric Identities for compound angles__### Compound Angles: cos(A+B), sin(A-B), cos(A-B)

In this page, a simple proof, based on the earlier result of `sin(A+B)`, is explained for expressing `cos(A+B)`, `sin(A-B)`, `cos(A-B)` in terms of `sinA`, `sinB`, `cosA` , and `cosB`.

*This topic is not released for all, please contact edtechgomathi@gmail.com for access.*

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