What is measure of angle r?

enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.

21 i watched a 3 hr vid explaining it

step-by-step explanation:

du what else would it be

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for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.