If A+B=90 Then prove that 1+cot square A=sec square B

1.	If A+B=90 Then prove that 1+cot square A=sec square B
Answer» A+B=90A=90-B1+cot square A=cosec squareAcosecAcosecA=cosec(90-B)cosec(90-B)secB*secB=sec squareB

Discussion