Mathematics-Trigonometry (NSTSE Class 10): Questions 20 - 25 of 121

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Question number: 20

» Mathematics » Trigonometry

MCQ▾

Question

The value of sin15°=

Choices

Choice (4) Response

a.

3122

b.

3+12

c.

3+122

d.

312

Question number: 21

» Mathematics » Trigonometry

MCQ▾

Question

If 5cos2θ+4sin2θ=5 then secθ+cosecθ = ________.

Choices

Choice (4) Response

a.

0

b.

1

c.

1+

d.

None of the above

Question number: 22

» Mathematics » Trigonometry

MCQ▾

Question

If sinθ+cosθ=2cos(90θ) then 12+1 = ________.

Choices

Choice (4) Response

a.

tanθ

b.

cotθ

c.

121

d.

None of the above

Question number: 23

» Mathematics » Trigonometry

MCQ▾

Question

sec2θ+cosec2θ = ________

Choices

Choice (4) Response

a.

sec2θcosec2θ

b.

sec2θcosec2θ

c.

cos2θsin2θ

d.

sec2θ.cosec2θ

Question number: 24

» Mathematics » Trigonometry

MCQ▾

Question

If tanα+sinα=m&tanαsinα=n then m2n2 = ________.

Choices

Choice (4) Response

a.

mn

b.

mn

c.

4mn

d.

None of the above

Question number: 25

» Mathematics » Trigonometry

MCQ▾

Question

cotθ+cosecθ1cotθcosecθ+1 = ________.

Choices

Choice (4) Response

a.

sinθcosθ+1

b.

sinθ+1cosθ

c.

cosθ+1sinθ

d.

All of the above

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