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3 years ago

Can someone please solve these 6 questions and explain briefly? I really do not understand them. Thank you

Physics

1 answer:

Verizon [17]3 years ago

5 0

Explanation:

Use SOH-CAH-TOA.

Sine = Opposite / Hypotenuse

Cosine = Adjacent / Hypotenuse

Tangent = Opposite / Adjacent

For example, in 2(a), we are given an angle and the hypotenuse. We want to find the side adjacent to the angle. Therefore, we should use cosine.

cos 58° = y / 32.3

y = 32.3 cos 58°

y ≈ 17.1

In 3(a), we are given the adjacent side and opposite side. We want to find the angle. So use tangent.

tan θ = 3.6 / 6.2

θ = tan⁻¹(3.6/6.2)

θ = 30.1°

In 4(a), we are given an angle and the hypotenuse. We want to find the side opposite of the angle. Therefore, we should use sine.

sin 47° = x / 29

x = 29 sin 47°

x ≈ 21.2

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Answer:

C. It speeds up, and the angle increases

Explanation:

We can answer by using the Snell's law:

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