Question

EXERCISE 9.1
1. A circus artist is climbing a 20 m long rope, which is
tightly stretched and tied from the top of a vertical
pole to the ground. Find the height of the pole, if
the angle made by the rope with the ground level is
30° (see Fig. 9.11).
2. A tree breaks due to storm and the broken part
bends so that the top of the tree touches the ground
making an angle 30° with it. The distance between
the foot of the tree to the point where the top
touches the ground is 8 m. Find the height of the​

Answer 1

Answer:

Answer for 9.1 is 10m.

Step-by-step explanation:

Let height of pole= x m.

As given angle is 30°

We know that SinA = p/h

So it becomes

Sin30°= x/20

As sin30°=1/2

By putting value of sin30° we get

X/20= 1/2

By cross multiplying

X = 10m..

Answer 2

Answer:

1 _10

2_24 know find the answers