Question

How do you evaluate `sec(sin^-1(-0.0399))`?

Answer 1

1.0016

Explanation:

Let `a=sin^(-1)(-0.0399) in Q_4`, wherein sec is positive. Then,

`sin a = -0.0399`.

The given expression = sec a = 1/cos a=1/sqrt(1-sin^2a)=1/sqrt(1-

(-0.0399)^2)=1.0016#, nearly..