Math, asked by shrutirana003, 3 months ago

Cos (A-B ) - Cos (A+B)

Answers

Answered by TMarvel

0

Step-by-step explanation:

cos(A-B) - cos(A+B)

= [cosA.cosB + sinA.sinB] - [cosA.cosB - sinA.sinB]

= cosA.cosB + sinA.sinB - cosA.cosB + sinA.sinB

= 2sinAsinB

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