∠A and ∠B are vertical angles. If m∠A=(3x-30)° and m∠B=(2x-9)°,then find the value of x.

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∠A and ∠B are vertical angles. If m∠A=(3x-30)° and m∠B=(2x-9)°,then find the value of x.

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Trung Dũng 5 years 2021-08-19T12:10:55+00:00 1 Answers 14 views 0

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  1. yenoanh
    0
    2021-08-19T12:12:06+00:00
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    Answer:

    x = 21°

    Step-by-step explanation:

    Vertical angles have the same measures, therefore:

    3x – 30 = 2x – 9

    x – 30 = -9

    x = 21°

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