Math, asked by abuzar31, 1 year ago

cot(45-A/2)=tanA+secA

Answers

Answered by priyank53

1

cot(45-A/2)=1/tan(45-A/2)
=1+tan45.tanA/2 ÷tan45-tanA/2
=1+tanA/2÷1-tanA/2
=tanA+secA

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