Start learning 50% faster. Sign in now
Get Started with ixamBee
Start learning 50% faster. Sign in now Let y be the height of the houses, here AB = CD = y meter. Let x be the distance between the point on the road and the house making an elevation angle of 60°, here BE = x meter. Then, (30 - x) is the distance between the point on the road from the house making an elevation angle 30°, here DE = (30 - x) meter. Now, tan 60° = AB/BE ⇒ √3 = y/x ⇒ x = y/√3 ...(i) Also, tan 30° = CD/DE ⇒ 1/√3 = y/(30 - x) ⇒ √3y = 30 - x ⇒ √3y = 30 - y/√3 [from equation i] ⇒ 3y = 30√3 - y ⇒ 4y = 30√3 ⇒ y = 30√3/4 ≈ 12.9 meter
25% of 240 + √? = (2/3) × 120
38 – 3 2 + 5 2 + 6 2 = ? × 6
Find the simplified value of the given expression:
8 of 7 ÷ 2 × 5² + √36 – 10
13 X ? = 85 X 4 + √81 + 2
42 + 52% of 300 - ?% of 200 = 88
3.3 Times 2/27 of 40% of 364=?
(165 × 12) ÷ 45 + 110 = ? × 2
45 % of 180 + √144 * 8 = ?2 + 70 % of 80
√(82 × 7 × 52 - 175) = ?