# IMO Level 1- Mathematics Olympiad (SOF) Class 10: Questions 862 - 872 of 968

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## Question 862

### Question

MCQ▾

If equal________.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 863

MCQ▾

If ________.

### Choices

Choice (4)Response

a.

b.

c.

n

d.

2

## Question 864

MCQ▾

If then________

### Choices

Choice (4)Response

a.

b.

c.

4

d.

2

## Question 865

MCQ▾

If ________.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 866

MCQ▾

If ________.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 867

### 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.

9.86

b.

0.52

c.

9.02

d.

2.5

## Question 868

### Question

MCQ▾

If then value of is________

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 869

### Question

MCQ▾

If is equal to________

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 870

### 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.

## Question 871

### Question

MCQ▾

The length of a string between a kite and a point on the ground is . If the string makes an angle with level ground such that how high is the kite?

### Choices

Choice (4)Response

a.

44.96m

b.

c.

d.

76.96m

## Question 872

### Question

MCQ▾

The angles of depression of two ships from the top of a lighthouse are towards east. If the ship are 50m apart, the height of the lighthouse is________.

### Choices

Choice (4)Response

a.

b.

c.

d.