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Mathematics, 17.02.2021 20:00 eliza35

∠a and \angle b∠b are supplementary angles. \angle a∠a has a measure of 77\circ∘. Which of the following equations would you use to find the measured of \angle b∠b?

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∠a and \angle b∠b are supplementary angles. \angle a∠a has a measure of 77\circ∘. Which of the follo...
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