Respuesta :

meerkat18
To answer this problem, we can find to determine angle A first by taking the arc sin of 0.83. Angle A is equal to 33.9. Hence angle B should be 90-33.9 equal to 56.10. sin of 33.9 added to the sin of 56.10 is equal to 1.38. or we can just directly add the cos values since the sin is just the same as the complementary of each

The value of sin A + sin B will be 1.38. Option D is correct.

What is angle measurement?

An angle measure is the measurement of the angle created by two rays or arms at a shared vertex in geometry. A protractor is used to measure angles in degrees (°).

Given;

cos A = 0.83

cos B = 0.55

To find;

sin A + sin B

Calculation:

cos A = 0.83

A=cos⁻¹(0.83)

A= 33.9°

∠A and ∠B are complementary angles;

∠A+∠B =90°

33.9°+∠B=90°

∠B= 56.10°

⇒sin A + sin B

⇒sin 33.9°+ sin 56.10°

⇒1.38

The value of sin A + sin B will be 1.38.

Hence, option D is correct.

To learn more about the angle measurement, refer to the link;

https://brainly.com/question/14684647

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