Math, asked by sahasra123, 1 year ago

(i) Cosx + sinx = _/2 cosx
Find cosx - sinx

(ii) 3cosx + 4cosy - 7cosz = -14.
Find 4sin x/2 + 5sin y/2 + 2 sin z/2 ?
If (x,y,z) belongs to (0,phi)..?

Answers

Answered by Aryan2017

1

1._|2sinx is the answer

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