Question

If cosec A =15/7 and A+B=90, find the value of
sec B

Answer 1

We are given A+B=90, 
                    So, B= (90-A) ..............................................(1)
We have to find sec B
                          Sec B = Sec (90-A)
                                    = Cosec A = 15/7           [By Eqn. (1)]