Question
At 9:30
a.m., the length of a pole’s shadow is equal to its height. What is the sun’s altitude at this time?
Solution
ATQ, The pole’s height = h, and its shadow = h. In the right triangle formed: Opposite side = height of the pole (h). Adjacent side = shadow (h). Using the tangent function: Hence, the sun’s altitude is 45° .
Now, we Solve for θ : 
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