nentmnkcheya nentmnkcheya

30-07-2016
Mathematics

Answered

Evaluate the expression using an appropriate double angle formula.. cos^2(15) - sin^2(15)

Verified Answer :

Hussain514 Hussain514

03-08-2016

cos²(15°) - sin²(15°) = cos(15° * 2) = √(3/2 so this is the answer by using apropriate formula double angle identity

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