Question
The angle of depression of a point on the ground as seen
from the top of a tower, 35 feet high, is 45°. Find the distance of the point on the ground from the foot of the tower.Solution
Let θ be the angle of depression of the point on the ground as seen from the top of a tower, here θ = 45° Let AC be the height of the tower, here AC = 35 feet. Let the distance of the point on the ground from the foot of the tower, AB = x feet. Here, tan θ = AC/AB ⇒ tan 45° = 35/x ⇒ 1 = 35/x ⇒ x = 35 feet
√1936 + √3025 = ? % of 220
289 + 896 + 144 – 25% of 1100 =?
?² = 37% of 800 – 14 × 18+ 5! - 20
- What will come in place of (?), in the given expression.
√2025 + 35% of 400 = ? Find the simplified value of the given expression:
(12 ÷ 3 of 2 + 11 of 2) ÷ 4
Solve for ?.
30 of 20 - 40 + 182 - 23 × ? = 83Â
144 (1/2) × 14 – 28 = 7 × ?Â
- What will come in place of (?), in the given expression.
(12% of 250) + (30% of 400) = ? - Identify x such that x% of 540 plus {1080 ÷ x of 9} × 6 gives 162