Question

If sinx is approximately 0.2588, what is the measurement of x to the nearest degree? Approximately, what is the cosine of the angle that is complementary to x?

Answer 1

To solve this, you must have a calculator that can do arcsin. When you do this, you get an angle of approximately 15 degrees.
A complementary angle is one that adds to 90 degrees.
So, to find this, simplt do 90-15 to get 75 degrees.