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if 32 sin^6 x = 10 - 15cos2x + b cos4x - a cos6x then prove , tan x tan5x = (a+b-5)/(a-b+7)

if 32 sin^6 x = 10 - 15cos2x + b cos4x -  a cos6x then prove , 
 tan x tan5x = (a+b-5)/(a-b+7)

Grade:11

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
4 years ago

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