Question 649335
Find the exact value of trig functions of theta 
sin (theta) = - 3/7 given that theta is in quadrant IV 
**
You are working with a reference angle and right triangle in given quadrant IV
sin=opp side/hypotenuse=-3/7
adjacent side=√(7^2-3^2)=√(49-9)=√40
..
Trig Functions:
sin theta=-3/7
cos theta=√40/7
tan theta=-3/√40=-(3√40)/40
csc theta=-7/3
sec theta=7/√40=(7√40)/40
cot theta=-√40/3