Question

If A+B=90 degree and sec A=5/3 then find the value of cosec B.

Answer 1

secA=h/b= 5/3
p^2=h^2-b^2
p^2=5^2-3^2
=25-9
=16
p=root 16
p=4

1/sinb=p/h
=4/5