princeevee princeevee

23-03-2017
Mathematics

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What is measure of angle R?

Enter your answer as a decimal in the box. Round only your final answer to the nearest hundredth.

What is measure of angle R Enter your answer as a decimal in the box Round only your final answer to the nearest hundredth class=

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spinions spinions

23-03-2017

You can use cos, sin or tan for this problem.
I'll use cos.
So we have cos∅=12/13.
We need the angle, so arccos(12/13)=∅. So, just plug that in.

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