Thank you for the opportunity to help you with your question!
using the trigonometric functions
sin A =
opposite / hypotenuse = a / c
cos A =
adjacent / hypotenuse = b / c
tan A =
opposite / adjacent = a / b
make shadow length subject by multiplying by 150 on both sides to give us
sin 75 * 150= shadow length
0.9659 *150= shadow lenght
shadow lenght= 144.88888
Therefore, the correct answer is A 144.89 feet
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