seseluka
21.10.2021 •
Mathematics
A pillar is fixed at one of the corners of a square meadow. The length of each edge of the meadow is 30m and the angle of elevation of the top of the pillar from the opposite comer is found 60°. Find the height of the pillar. (A) 93.49 m (B) 83.48 m (C) 69.93 m (D) 73.48m
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Ответ:
D. 73.48 m.
Step-by-step explanation:
The diagonal distance across the meadow
= √(30^2+30^2)
= √1800
tan 60 = h / length of the diagonal (where h = height of the pillar).
h = √1800 * tan 60
= 73.48 m
Ответ:
So she put 25% away and spent 75% of her allowance