Grade 12th passTrigonometry
Cos1.cos2.cos3.cos4.cos5.cos6.cos7.cos8.cos9....cos29?
Cos1.cos2.cos3.cos4.cos5.cos6.cos7.cos8.cos9....cos29?
1 Answer
Deepak Kumar Shringi
use the formula for
cosc-cosd = 2cosc+d/2 cos c-d/2
cosc-cosd = 2cosc+d/2 cos c-d/2
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