Name a pair of supplementary angles.

Mathematics

1 answer:

Semmy [17]4 years ago

8 0

PUT and SUT added up make 180 degrees (supplementary)

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Based on the figure, which of the following equations is also true?

Leno4ka [110]

Answer:

The correct answer is B.

Step-by-step explanation:

Because you know two of the angles in a triangle are 90° and 52°, you can infer that the third angle is 38°. There is a trigonometry rule that states the sine of an angle is equivalent to the cosine of 90° minus that angle, which you can apply to here. Since $Sin(52$ ° $)$ = $\frac{17}{c}$ , you know that $Cos(90$ ° $-52$ ° $)$ or $Cos(38$ ° $)$ also equals $\frac{17}{c}$ , so choice B is the correct answer.