From the top of a cliff the angles of depression of two boats in the same vertical plane at the observer’s eye are 30° and 45°. If the distance between the boats is 100 m, find the height of the cliff. 

From the top of a cliff the angles of depression of two boats in the same vertical plane at the observer’s eye are 30° and 45°. If the distance between the boats is 100 m, find the height of the cliff. 

1). 317.64 m
2). 27.86 m
3). 136.612 m 
4). None of these

Answer This Question with Explaination and Earn! Click Here to Know More!

---

Answer This Question
Name:
Email:
Answer :
Sum of (2+3)
Submit:

Other Questions

1. If $\theta$ be an acute angle and $7 sin^{2}\theta + 3 cos^{2}\theta$ = 4, then the value of $tan\theta$ is

2.  Solve for side b of a right spherical triangle ABC whose parts are a = 46°, c = 75° and C = 90°.

3.  By expressing cos 113° in terms of trigonometrical ratios, answer will be

4. If $sin(60^{0}-\theta)$ = $cos(\psi - 30^{0})$,then the value of $tan(\psi-\theta)$ is (assume that $\theta$ and $\psi$ are both positive acute angles with $\theta < 60^{0}$ and $\psi > 30^{0}$.

5. What is the simplified value of (cosec A + sin A)(cosec A - sin A)?

6. If $(1+sin\alpha)(1+sin\beta) (1 + sin\gamma)$ =$(1-sin\alpha) (1-sin\beta)(1 - sin\gamma)$ then each side is equal to

7. If $sec\theta + tan\theta$ = p, $(p\neq 0)$ then $sec\theta$ is equal to

8.  1 + cot²2θ =

9. The value of cos1° sin89° + cos2° sin88° + cos3° sin87° + …. + cos89° sin1°, is

10. If $\frac{secA}{(secA ­- 1)} + \frac{secA}{(secA + 1)} = x$, then x is