Question
From a point on the ground, the angle of elevation to
the top of a building is 30 degrees. If the distance between the point and the base of the building is 50 meters, find the height of the building (use β3 = 1.732).Solution
Let the height of the building be h. Using tan 30 degrees = h/50 and tan 30 degrees = 1/β3 = 1/1.732, h = 50 * (1/β3) = 50 * 0.577 = 28.87 m. Correct Answer: b) 28.87 m
Evaluate:
β729 + β49 - β16 + 1/β64
Simplify:

(1/5)(40% of 800 β 120) = ? Γ 5
2/5 of 3/4 of 7/9 of 7200 = ?
`sqrt(5476)` + 40% of 1640 = ? `xx` 4 - 2020
? = (22% of 25% of 60% of 3000) + 21
Determine the simplified value of the given mathematical expression.
(342 β 20% of 5280) = ? Γ· 3
β157464 =?