WorksheetsPrecalculus Trig Identities
Total questions: 10
Worksheet time: 14mins
Name
Class
Date
1.
Solve the following for cos2θ:
sin2θ + cos2θ = 1
sin2θ + cos2θ = 1
a)
cos2θ = 1 - sin2θ
b)
cosθ = 1 + sin2θ
c)
cosθ = 1 - sinθ
d)
cos2θ = Adj/hyp
2.
Solve the following for tan2θ:
1 + tan2θ = sec2θ
1 + tan2θ = sec2θ
a)
tan2θ = sec2θ + 1
b)
tan2θ = sec2θ - 1
c)
tanθ = secθ - 1
d)
tan2θ = opp/adj
3.
Rewrite tan(x) in terms of sin(x) and cos(x).
a)
tan(x) = cos(x)/sin(x)
b)
tan(x) = 1/cot(x)
c)
tan(x) = sin(x)/cos(x)
d)
tan(x) = opp/adj
4.
What is csc(x) equivalent to?
a)
1/sin(x)
b)
1/tan(x)
c)
sin(x)
d)
1/cos(x)
5.
Please select the correct solution
a)
csc2 x
b)
cot2 x
c)
sin2 x
d)
sec2 x
6.
Please select the correct solution cos 2 x + sin 2 x=
a)
1
b)
csc 2 x + sec 2 x
c)
sin 2 x
d)
1 - sin 2 x
7.
Please select the correct solution
a)
csc x
b)
sec x
c)
cot x
d)
tan x
8.
Simplify
a)
sin²θ
b)
cosθ
c)
tanθ
d)
1- sin²θ
9.
Simplify
a)
-1
b)
sin θ
c)
csc θ
d)
1
10.
Simplify
a)
csc²θ
b)
sec²θ
c)
cscθ
d)
1
100 %
