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16-06-2021
Mathematics

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I don’t really understand how to do this

I dont really understand how to do this class=

Respuesta :

abidemiokin abidemiokin

21-06-2021

Answer:

<A = 63degrees

Step-by-step explanation:

From triangle DEF;

<D + <E + <F = 180

87 + 30 + <F = 180

117 + <F = 180

<F = 180 - 117

<F = 63degrees

Since <A = <F based on similarities, then <A = 63degrees

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