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Quiz in Trigonometry Flashcards | StudBud
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Quiz in Trigonometry
Quiz in Trigonometry
20 terms
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Answers
1
Trigonometry is the branch of mathematics concerned with specific functions of angles and their application to calculate
False
True
2
If sin A=1/2 then the value of cot A is
√3
1
1/√3
√3/2
3
The value of sin 45° + cos 45° is
√3/2
1
1/√2
√2
4
If triangle ABC is right angled at C, then the value of cos (A+B) is
0
√3/2
1/2
1
5
There are six functions of an angle commonly used in trigonometry
False
True
6
Trigonometric identities are used in obtaining unknown angles.
False
True
7
The value of tan 1° tan 2° tan 3° ...tan 89° is
0
1/2
2
1
8
2 tan 30°/(1+tan 30°)=
Sin 60°
Sin 30°
Cos 60°
Tan 60°
9
Cosecant defined ratio of adjacent to the hypotenuse
True
False
10
The value of sin 60° cos 30°+ sin 30° cos 60° is
4
2
0
1
11
The hypotenuse is the side opposite to the 90° angle in a right triangle.
True
False
12
If cos x=2/3 then tan x is equal to
√5/2
√(5/2)
2/√5
5/2
13
Sine define as the ratio of the side opposite to the hypotenuse
False
True
14
The cosine, cotangent, and cosecant are named because they are respectively the sine, tangent and secant complementary.
True
False
15
Trigonometric functions are the ratios between edges of a right triangle.
False
True
16
The value of tan 60°/ cot 30° is equal to
0
2
3
1
17
Tangent defined as the ratio of opposite to the adjacent
True
False
18
The main functions in trigonometry are sine, cosine, and tangent
False
True
19
If cos a+b=0 then sin (a-b) can be reduced to
sin a
sin 2a
cos 2B
cos B
20
Sin 2A= 2 sin A is true when A=
60°
30°
45°
0°
