Math, asked by empoorna, 6 months ago

2cos^2B-1 = tan^2 then cosAcosB

Answers

Answered by rinkudeb636

1

Answer:

Answer:

2 Cos^2 B -1 = Sec^A-1

2 Cos^2B = 1/Cos^2A ---- Cos^2A × Cos^2B=1/2

CosA × CosB = +- 1/√2

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Step-by-step explanation:

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Answered by bhoopan2717

0

Answer:

your answer is

cos A . cos B= + 1/2 , cos A . cos B= -1/2

Step-by-step explanation:

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