Test: Trigonometric functions I - Normal

Double click on maths expressions to zoom
Question 1:   Convert 25° to radians.
2π 3
π 2
7π 36
5π 36
Question 2:   Convert 11π 6 to degrees.
45°
225°
270°
330°
Question 3:   A radian measure of an arc α in a circle equals 3π 4 while radius R equals   5cm .  What is the length l of this arc?
20π 3
15π 4
3π 20
4π 15
Question 4:   Solve the expression 3tg180°4ctg90° .
3
0
1
7
Question 5:   Solve the expression cos 60° +ctg 45° .
1 2
1
0
1
Question 6:   Solve sin660° .
3 2
3 2
1 2
1 2
Question 7:   Which interval is decreasing for function y=cosx .
Question 8:   Which of this points the graph of function y=tgx crosses?
π 4 ;1
π 4 ;1
π 2 ;0
π 2 ;0
Question 9:   Simplify the expression 1 sin 2 α+ct g 2 α× sin 2 α .
1
1 cos 2 α
1
0
Question 10:   Simplify the expression cos α+β +cos αβ .
sinαsinβ
2sinαsinβ
cosαcosβ
2cosαcosβ