prove that (cosa+cosb/sina+sinb)^n + (sina+sinb/cisa-cosb)^n = 2 cot^n a-b/2 or 0 accordingly as n is an even or odd integer
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pratyush4211:
Nice Answer
Thanks so much for the answer
My pleasure to help you dear :)
What is your name?
Thnq @pratyush4211
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