# Mathematics-Trigonometry (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 30 - 35 of 51

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## Question number: 30

» Mathematics » Trigonometry

MCQ▾

### Question

The perimeter of an equilateral triangle whose area is is

### Choices

Choice (4) Response

a.

8 cm

b.

3 cm

c.

4 cm

d.

12 cm

## Question number: 31

» Mathematics » Trigonometry

MCQ▾

### Question

An aero plane flying at a height of 300 m above the ground phase vertically above another plane at an instant when the angle of elevation of the two planes from the same point on the ground are and , respectively. The height of the lower plane from the ground (in m) is

### Choices

Choice (4) Response

a.

150

b.

c.

50

d.

## Question number: 32

» Mathematics » Trigonometry

MCQ▾

The value of is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 33

» Mathematics » Trigonometry

MCQ▾

### Question

From the top of a pillar of height 20 m the angles of elevation and depression of the top and bottom of another pillar are and , respectively. The height of the second pillar (in m) is

### Choices

Choice (4) Response

a.

b.

c.

d.

20

## Question number: 34

» Mathematics » Trigonometry

MCQ▾

### Question

are two parallel lines. PQ cuts AB and CD at E and F irrespectively. EL is the bisector of . If , then will be

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 35

» Mathematics » Trigonometry

MCQ▾

The value of is:

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page