How do I find sin^-1 (cos (pi))

Simplify Tangent^2 (theta) / Sec (theta) + 1

1/2x - 2 = 8 solve for x

What is the domain and range of y = (-16x^2) + 16x

How to understand supplementary and complementary angles.

What is the value of the expression if a = 20 5a

A Florida factory produces fishing reels at a rate of 800 per day, every day. In April, they are forced to cut their production by 1/5 due to an aluminum shortage. A chain of sporting goods stores orders 20,000 fishing reels.

Find the product and simply 4/9 of 15/8

If you know the number of yards for a measurement, you can change that measure to meters by multiplying the number of yards by 0.9144. a. Write a function rule that relates meters to yards.

Jerry drew an obtuse angle. Which could be the measure of his angle?

A library charges a late return fee of 3.50 plus $0.15 per day that a book is returned late write a equation to find the total late fee f for any numbers of days late d