Answers and Explanations 169
Answers
101–200
121.
sinθ = 1
2
; cosθ = −
3
2
; tanθ = − 3
3
The given angle measure is θ
π
= 5
6
. Using the second quadrant of the unit circle, you
have the following:
sin
cos
tan
sin
cos
θ
θ
θ
θ
θ
=
= −
=
=
−
= −
= −
1
2
3
2
1 2
3 2
1
3
3
3
122.
sinθ = −
3
2
; cosθ = − 1
2
; tanθ = 3
Answers
101–200
121.
sinθ = 1
2
; cosθ = −
3
2
; tanθ = − 3
3
The given angle measure is θ
π
= 5
6
. Using the second quadrant of the unit circle, you
have the following:
sin
cos
tan
sin
cos
θ
θ
θ
θ
θ
=
= −
=
=
−
= −
= −
1
2
3
2
1 2
3 2
1
3
3
3
122.
sinθ = −
3
2
; cosθ = − 1
2
; tanθ = 3