D Question 2 Simplify the expression. Write the final form with no fractions. cos 0 - sec 0 sec 8 O -sec 0 O -sin20 O sin20 O sec 0 D Question 3 Use the given information to find the exact function value. Given csc 0 = 37 12 and cos 0 > 0, find cos 20. O 840 1369 1081 1369 O 1081 1369 O 840 - 1260 D Question 4 Use the half-angle formulatto find the exact value. 15x tan O -2- V3 O 2+ 13 O 1-V2 O -1- V2 D Question 5 5 pts Find the exact value sin 1 2 - sin-' (-2) O T O - 12 CamScanner