WorksheetsTrigonometric Identities
Total questions: 15
Worksheet time: 30mins
Name
Class
Date
1.
The first step in simplifying is...
a)
multiply
b)
factor
c)
change to sine and cosine
d)
add or subtract
2.
When verifying you must first ...
a)
pick a side to simplify
b)
find a trig. identity
c)
Change to sine and cosine
d)
Change Values
3.
cotθ=
a)
cosθ/sinθ
b)
sinθ/cosθ
c)
tanθ
d)
1/cosθ
4.
secθ=
a)
1/cosθ
b)
1/sinθ
c)
1/tanθ
d)
1/cscθ
5.
sin2θ=
a)
1 - cos2θ
b)
1 - sin2θ
c)
sec2θ - 1
d)
csc2θ - 1
6.
*
a)
csc2 x
b)
sec2 x
c)
cot2 x
d)
tan2 x
7.
a)
csc x
b)
sec x
c)
1/sec x
d)
cos x
8.
a)
sin²θ
b)
cosθ
c)
tanθ
d)
1- sin²θ
9.
a)
sinθ
b)
cot²θ
c)
tan²θ
d)
cos²θ
10.
a)
csc²θ
b)
csc θ sec θ
c)
cot θ tan θ
d)
1/sinθ
11.
a)
sinθ
b)
cos²θ
c)
sin²θ
d)
1- sin²θ
12.
Simplify.
a)
sin x
b)
cos x
c)
tan x
d)
1
13.
If cos (x +200) = sin(x-10)
then x =
then x =
a)
30
b)
40
c)
50
d)
60
14.
What is the value of sin210ocos30o - cos210osin30o is
a)
0
b)
-1
c)
1
d)
sin240o
15.
The expression sinA(cscA-sinA) is equivalent to
a)
1
b)
-sin2A
c)
cos2A
d)
cosA
100 %
