in right triangle DEF, cos D = 12/17. the measure of angle D, to the nearest 10th of a degree, is _____.

asked May 13, 2023 223k views

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3 votes

If:

$\cos D=(12)/(17),$

then:

$D=\cos ^(-1)((12)/(17)).$

Therefore:

$D\approx45.1^(\circ)\text{.}$

Answer:

$45.1^(\circ)\text{.}$

Fav answered May 19, 2023

by Fav

3.7k points

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