Question

Help me please. This is my last question

Answer 1

Answer: D. 44

Step-by-step explanation:

Here, we need to know the concept of trigonometry.

• Sine (sin) = Opposite/Hypotenuse = O/H
• Cosine (cos) = Adjacent/Hypotenuse = A/H
• Tangent (tan) = Oppostie/Adjacent = O/A

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Given

- The adjacent side of angle x and the hypotenuse.

- We are going to use Cosine.

Solve

cos (x) = 15/21

       x  = cos⁻¹ (15/21)

       x  ≈ 44

Hope this helps!! :)

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