Question

Using the identity sin²theta + cos²theta = 1, find the value of tan , to the nearest hundredth, if cos theta = 0.57 and 0 < theta <

π/2​

Answer 1

tan*=sin*/cos*

sin*=1-(0.57)^2

sin*=0.6751

tan*=0.57/0.6751

=0.844