Which of the following is not a function?

The tangent of an angle is not which of the following? a) ratiob) proportionc) fractiond) opposite over adjacent

Me! #1 write an equation for the interior angles of this triangle that uses the triangle sum theorem. #2 what is the value of x? #3 what is the measure of #4 classify the triangle above as acute, obtuse, or right. state your reason in a complete sentence.

Write the sentence as an equation. z plus 372 is equal to 160