Math, asked by Anonymous, 5 months ago

Algebra & Trigonon
16
15.
Prove that
(1 + cos a + i sin a) ^ p+ (1 + cos a - i sin a)^ p

= 2^ p+ 1 cos^ p( a/2) cos( pa/2)

Answers

Answered by sa0927745

0

Answer:

fddhjgsefzsahjcsdtcxh

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