chapter 10.1 - trigonometric functions of angles Flashcards
1
Q
sin30°
A
½
2
Q
sin45°
A
√2/2
3
Q
sin60°
A
√3/2
4
Q
cos30°
A
√3/2
5
Q
cos45°
A
√2/2
6
Q
cos60°
A
½
7
Q
tan30°
A
1/√3
8
Q
tan45°
A
1
9
Q
tan60°
A
√3
10
Q
sin (90°-θ) = __
A
cosθ
11
Q
cos(90°-θ) = __
A
sinθ
12
Q
tan(90°-θ)
A
1/ tanθ
13
Q
what functions are positive in the 1st quadrant ?
A
ALL (sin, cos, tan)
14
Q
what functions are positive in the 2nd quadrant ?
A
sin only
15
Q
what functions are positive in the 3rd quadrant ?
A
tan
