Math, asked by vangalakarthik6, 1 year ago

prove that tan(45°+A)tan(45°-A)=1

Answers

Answered by Divyesh123
8
tan (45+A) tan (45-A)=1
1/[cot(45+A)]* tan (45-A)=1
1/tan (90-(45+A)) * tan (45-A)=1
1/tan (45-A) * tan (45-A)=1
1=1
L.H.S.=R.H.S.
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