The degree measure of an angle in a right triangle is x, and cos x = 1/8. Which of the following expressions is also equal to 1/8?

sin(90-x)
sin(x)
cos(x-90)
cos(90-x)

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

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When 60% of a number is added to the number the result is 192 what is the bumber