Trigonometrical Identities Test

Result

Trigonometrical Identities Test - 8

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
1 / -0

If angle y is acute, i.e. 0° < y < 90° and sec 55° cos (90° - y) = 1; find the measure of angle y.

A
y = 45°

B
y = 35°

C
y = 65°

D
y = 85°
Question 2
1 / -0

What is the value of ?

A
sec²+ tan²

B
sec+ tan

C
sec²- tan²

D
cos²- sin²
Question 3
1 / -0

What is the value of?

A
1

B
0

C
- 2

D
- 1
Question 4
1 / -0

What is the value of ?

A
2

B
1

C
0

D
3
Question 5
1 / -0

What is the value of (sec- cos) (cosec- sin) cosec²?

A
tan

B
sin

C
cot

D
cos
Question 6
1 / -0

Find the value of + - x cos.

A
1

B

C
2

D
3
Question 7
1 / -0

Without using tables, evaluate – 8 sin²30°.

A
– 2

B
– 1

C
0

D
2
Question 8
1 / -0

Evaluate the following without using trigonometric tables:

cos²55° + cos²35° +

A
-1

B
1

C
0

D
2
Question 9
1 / -0

What is the value of - tanA?

A
cosA

B
sinA

C
tanA

D
secA
Question 10
1 / -0

What is the value of cos A + ?

A
2

B
- 1

C
1

D
- 2
Question 11
1 / -0

Evaluate cos²60° + cos²30° + tan 76°.tan 14° - 2.

A
1

B
- 1

C
0

D
4
Question 12
1 / -0

Find the value of x if cos35° cosec55° + tan63° tan27° - x cos²60° = 1.

A
3

B
2

C
- 2

D
4
Question 13
1 / -0

Evaluate + 3 cos 40° cosec 50° - 2 sec 35° sin 55°.

A
1

B
3

C
2

D
6
Question 14
1 / -0

What will be the value of ?

A

B

C

D
Question 15
1 / -0

What is the value of 2sin² - + ?

A
2

B
3

C
1

D
4