Math, asked by avishiktabasu9c11, 1 month ago

A+B=90° PT sec^2A+sec^2B=sec^2A-sec^2B

Answers

Answered by dashrathmishra007

0

Step-by-step explanation:

L.H.S. = sec2 A + sec2 B. = 1/cos2 A + 1/cos2 B. = 1/cos2 A + 1/cos2 (90˚ – A). = 1/cos2 A + 1/sin2A. = 1/sin2 A cos2 A. = sec2 A cosec2

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