Mathematics-Trigonometry (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 8 - 13 of 14

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Question number: 8

» Mathematics » Trigonometry

MCQ▾

Question

cos 4x is equal to

Choices

Choice (4) Response

a.

1 + 8sin2x-cos2x

b.

2cos22x

c.

1 + 2sin22x

d.

1 - 8sin2x-cos2x

Question number: 9

» Mathematics » Trigonometry

MCQ▾

Question

In the figure below, PQ = QS, QR = RS and ∠SRQ = 100°. Find the value of ∠QPS.

A triangle PRS having an angle of 100

A Triangle PRS Having an Angle of 100

Find the value of ∠QPS by using given angle and data

Choices

Choice (4) Response

a.

40°

b.

15°

c.

35°

d.

20°

Question number: 10

» Mathematics » Trigonometry

MCQ▾

Question

Three circles each of radius r units are drawn inside an equilateral triangle of side a units, such that each circle touches the other two and two sides of the triangle as shown in the figure, (P, Q and R are the Centers of the three circles). Then, relation between r and a is

 A triangle having three circles in it

a Triangle Having Three Circles in It

Find the relation between radius r and length of triangle’s side a

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 11

» Mathematics » Trigonometry

MCQ▾

Question

If then is equal to

Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

Question number: 12

» Mathematics » Trigonometry

MCQ▾

Question

If then the value of is

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 13

» Mathematics » Trigonometry

MCQ▾

Question

Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

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