# Thread: exact value of a trig function

1. ## exact value of a trig function

find the exact value of the trig function. sin A = 2/7 cos B = -5/7

(pi/2) is less than or equal to A which is less than pi.

and

(pi) is less than or equal to B which is less than or equal to (3pi/2)

Hello jumpman23
Originally Posted by jumpman23
find the exact value of the trig function. sin A = 2/7 cos B = -5/7

(pi/2) is less than or equal to A which is less than pi.

and

(pi) is less than or equal to B which is less than or equal to (3pi/2)
What trig function? The question doesn't make sense!