# IMO Level 1- Mathematics Olympiad (SOF) Class 10: Questions 880 - 884 of 968

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## Question 880

### Question

MCQ▾

The top of a broken tree has its top end touching the ground at a distance 9m from the bottom, the angle made by the broken end with the ground is Then length of broken part is________.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 881

### Question

MCQ▾

The top of a broken tree has its top end touching the ground at a distance 18m from the bottom, the angle made by the broken end with the ground is Then length of broken part is________.

### Choices

Choice (4)Response

a.

36

b.

24

c.

14

d.

12

## Question 882

### Question

MCQ▾

An observer tall is away from a chimney. The angle of elevation of he top of the chimney from her eyes is the height of the chimney is________.

### Choices

Choice (4)Response

a.

2.2

b.

2.5

c.

9.02

d.

1.45

## Question 883

### Question

MCQ▾

The angle of elevation of a cloud from a point h meters above a lake is . The angle of depression of its reflection in the lake is The height of the cloud is________.

### Choices

Choice (4)Response

a.

hcot (30°- θ)

b.

c.

htan (30°- θ)

d.

## Question 884

### Question

MCQ▾

The top of two poles of height and are connected by a wire. If the wire makes an angle of with horizontal, then the length of the wire is________

### Choices

Choice (4)Response

a.

b.

c.

d.