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Need help with Trigonometry!

Need help with Trigonometry!-example-1
User Ashesh
by
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1 Answer

1 vote

Answer:

h = 109.9 in

Explanation:

The above question can be solved using trigonometric ratio formula,

tan θ = opposite/adjacent

tan θ = tan 70° ≈ 2.7475

opposite = height of lamppost = h in

Adjacent = 40 in

Thus,


tan 70 = (h)/(40)


2.7475 = (h)/(40)

Multiply both sides by 40 to solve for h


40*2.7475 = h

h = 109.9 inches

The height of the lamppost = h = 109.9 inches (to nearest tenth)

User Ryan Dlugosz
by
8.2k points

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