01-05-2018
Mathematics

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What is the trigonometric ratio for cos D?

What is the trigonometric ratio for cos D class=

Respuesta :

01-05-2018

Hi there!

The definition of the cosine:
[tex] \cos( \alpha ) = \frac{adjecent}{hypotenuse} [/tex]

When we fill in this formula with the data from the picture, we get the following:
[tex] \cos(d) = \frac{21}{75} = \frac{7}{25} [/tex]

Therefore, the answer is 7 / 25

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