Help me answer a, b and c

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

The length and width of a rectangle are consecutive even integers the area of the rectangle is 120 squares units what are the length and width of the rectangle

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.