Question

Solution for: A man 1.7m tall observe that the angle of elevation of a top of a tower to be 28°.He moves 50m away from the angle of elevation to be 35°.How far above the ground is the tip of the tower to three significant figures.

Answer 1

Not quite sure how to parse that 2nd sentence, but let's just work with the height of the tower above his eye level.

Draw a diagram and review the cot function. You will see that if the height is h,

h cot28° - h cot35° = 50

Now find h and add 1.70

Answer 2

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Answer 3

The question demands critical thinking, you can solve this question in two ways firstly ignore the 1.7m and secondly use the projected elevation