Calculate a22 for the product of the following matrices. (but also could you explain how you got to the answer) this is dealing with matrices so the 22 on the a is like a reverse exponent if that makes sense

A. 9

B. 13

C. 16

The triangle shown has a hypotenuse with a length of 13 feet. the measure of angle a is 20 degrees. and the measure of angle b is 70 degrees. which of the following is closest to the length, in feet, of line segment ac? no need to use a calculator to find the trig numbers. each function is listed below. 4.4 5 12.2 35.7