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Math 11 Chapter 10
Trigonometric Identities of Sum and Differe
Test - 7
1.
Sin(
p
/ 2 -
q
)=Sin(
p
/ 2 +
q
) = ____________.
a) Tan
b) Cos
c) Sin
2.
If Sin
q
= 2/3 then cosec ( -
q
) = ________.
a) -2/3
b) 2/3
c) -3/2.
d) 3/2
3.
Tan (45
o
+ A) tan (45
o
- A) = 1
a) True
b) False
4.
If
q
is in first quadrant then sign of tan (2
p
-
q
) is __________.
a) Negative
b) Irrational
c) Positive
d) Integer
5.
Cos (270
0
- θ) = ……………
a) - sin θ
b) -cos θ
c) sin θ
d) cos θ
6.
Fundamental law of trigonometry is given by cos (x + y) = cos x cos y - sin x sin y
a) False
b) True
7.
Tan (45
o
-
q
)
a) 1-tan
q
/ 4+tan
q
b) 1-tan
q
/ 2+tan
q
c) 1-tan
q
/ 1+tan
q
8.
Cos (
p
/2 -
b
)
a) Cos
b
b) Sin
b
c) Tan
b
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