If cos(t)=4/7 and t is in the 4th quadrant, find sin(t)?

1 Answer
Jan 30, 2018

sin t = - sqrt33/7

Explanation:

sin^2 t = 1 - cos^2 t = 1 - 16/49 = 33/49
sin t = +- sqrt33/7
Since t is in the Quadrant 4, then, sin t is negative -->
sin t = - sqrt33/7