Posted by Dave on .
How do i set this trig problem up? PLEASE help me.
Find tan (s + t) given that sin s = 1/4, with s in quadrant 2, and sin t = 1/2, with t in quadrant 4.

Trig 
Reiny,
sin s = 1/4 and s in II, > tan s = 1/√15
sin t = 1/2, and t in IV > tan t = 1/√3
tan(s+t) = (tans + tant)/(1  tanstant)
= (1/√15  1/√3)/(1  1/√45)
I will let you finish the arithmetic.