Math, asked by hindujachandni2568, 10 months ago

if A-B = 60 to cos A. cos B + sin A. sin B =1/2

Answers

Answered by ᎷíssGℓαмσƦσυs

1

it's formula

cosA.cosB+ sinA.sinB

cos(A-B)

A-B=60°

cos60°

1/2

Rhs= Lhs

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