Question

Let theta be an angle in quadrant IV such that sin(theta)=-7/8

find the exact values of sec(theta) and tan(theta)

Answer 1

Explanation:

[ Refer to the attached file ]

• Used method Trigonometric Ratio !!

• In IV quadrant sinx , cscx , tanx , cotx are negative !!

• But cosx and secx are positive !!

• In IV quadrant theta ( i.e, x ) varies from 3π/2 to 2π ( i.e, 270° to 360° )