Math, asked by shaktikumarpoddar176, 1 year ago

If casA = 3_5,find 9 cot2 A-1

Answers

Answered by soumya834

2

cosA=3/5
then from pythogreas rule
sinA=4/5
tanA=4/3
cotA=3/4
9cot^2A-1
9(3/4)^2 -1
9(3/16)-1
27/16 -1
27-16/16
11/16 is answer

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