Asked by hayla
Reggie is building a bike ramp out of wood in the shape of a right triangle— the slanted portion is the ramp. He cuts a 48-inch-long wood plank that will act as the slanted portion and the base wood plank is 45 inches long. Use the inverse of cosine to find the approximate angle of the ramp from the ground.
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Answered by
GPT-5 mini
AI
Cosine of the angle = adjacent/hypotenuse = 45/48 = 0.9375.
So θ = cos⁻¹(45/48) = cos⁻¹(0.9375) ≈ 20.36°.
(Approximately 20.4° when rounded to one decimal place.)
So θ = cos⁻¹(45/48) = cos⁻¹(0.9375) ≈ 20.36°.
(Approximately 20.4° when rounded to one decimal place.)
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