Question

(a) sin x° = 0.8

Answer 1

The value of x is 126.87° and the value of y is 53°.

What is an obtuse and an acute angle?

An obtuse angle is an angle that is greater than 90° but lesser than 180° while an acute angle is an angle between 0-90°.

From the given information:

sin x° = 0.8

x = sin⁻¹ (0.8)

x = 53.13°

x + 53.1° = 180°

x = 180° -53.13°

x = 126.87°

If cos 127° = -cos y°,

-cos y = -0.6018

cos y = 0.6018

y = cos⁻¹ (0.6018)

y = 53°

Learn more about the determination of obtuse and acute angles here:
brainly.com/question/22323626

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