3 years ago

Please add a number line if you can

Mathematics

1 answer:

taurus [48]3 years ago

3 0

Hope I helped you thank you so much

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<u>Answer:</u>

Angle A = 39°

<u>Step-by-step explanation:</u>

We are given that there is a triangle ABC where a = 9, c = 5 and angle B = 120° and we are to find the measure of angle A.

But first we need to find the side b using the law of cosine:

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