Question

Find the exact value of each expression if 0<<90
If sin=1/2,find tan
What formula do i use?

Answer 1

u need to find the angle that gives u sin(angle)=1/2 first. You can look it up from the unit circle here: http://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Unit_circle_angles_color.svg/720px-Unit_circle_angles_color.svg.png

Figure out the angle first; then you will find tan