Math, asked by Bhargav20045, 1 year ago

cos^2( ∅÷6+ θ) − sin^2( ∅÷6+ θ)

Answers

Answered by rahul200013

the answer is :- cos2(phi÷6+theta)

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rahul200013: so the expression becomes

Bhargav20045: yeah i got it how to do it thanks for the answer

rahul200013: cos square A - sin square A

rahul200013: yep happy to help

Bhargav20045: i didnt get it because i kept the pi value as 360° i thought its 2pi

rahul200013: no no its phi

Bhargav20045: ok something what

rahul200013: whenever you see both sin and cos have same things in braces

rahul200013: then its always related to identities

rahul200013: phi is just a sign like theta

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