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29-07-2018
Mathematics

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Using the following triangle, what is the cosine of angle B?

Using the following triangle what is the cosine of angle B class=

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Аноним Аноним

29-07-2018

Hello!

To find cosine, use the formula cos = adjacent / hypotenuse.

According to angle B, adjacent of angle B is side A, and the hypotenuse is side c because the hypotenuse is always opposite the right angle.

Therefore, the cosine of angle B is a/c.

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