This Question 1 pt 20 of 20 16 complete Find the exact value

This Question: 1 pt 20 of 20 (16 complete) Find the exact value of the expression. Do not use a calculator sin 45 cos 30 Select the correct choice below and, if necessary,fill in the answer box to complete your choice. O A. sin 45 cos 30° O B. The answer is undefined (Simplity your answer. Type an exact answer, using radicals as needed. Use integers or fractions for any 9 6 3 Click to select and enter your answer(s).

Solution

sin 45 cos 30

sin 45=sqrt2/2

cos 30=sqrt3/2

Therefore sin 45 cos 30=(sqrt2/2)(sqrt3/2) =sqrt(6)/4