Michigan State University - Diagnostic Exam

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6.17

  •   Approximately how long must a ladder be to reach the top of a 3 meter wall if the angle between the ladder and the ground is 60∘ ?

    a) 6.0 m b) 4.5 m c) 3.5 m d) 6.5 m e) 5.5 m

Solution:

Let L equal the length of the ladder. Then

3 2 (3 ) sin60 ∘ = -- ⇒ L = -√---≈ 3.4641 L 3

Diagnostic:

If you miss this question please review applications of right triangle trigonometry.

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July 15, 2008