Questions)
Topics Covered:
● Unit Circle
● Trig Functions & Values
● Identities
● Equations
● Inverse Trig
● Graphing Concepts
● Applications
🔵 PART 1: Unit Circle & Basic Values
(1–40)
1.
Find: sin(0)
Answer: 0
Explanation: On the unit circle, angle 0 corresponds to point (1,0), so sine = y = 0.
2.
Find: cos(0)
Answer: 1
Explanation: Cosine is the x-coordinate → 1.
3.
Find: sin(π/2)
Answer: 1
Explanation: Point is (0,1).
4.
,Find: cos(π/2)
Answer: 0
5.
Find: tan(π/4)
Answer: 1
Explanation: sin/cos = √2/2 ÷ √2/2 = 1.
6.
sin(π/6)
Answer: 1/2
7.
cos(π/6)
Answer: √3/2
8.
tan(π/6)
Answer: 1/√3
9.
sin(π/3)
Answer: √3/2
10.
cos(π/3)
Answer: 1/2
11.
sin(5π/6)
Answer: 1/2
Explanation: Reference angle π/6, QII positive.
12.
, cos(5π/6)
Answer: −√3/2
13.
tan(5π/6)
Answer: −1/√3
14.
sin(7π/6)
Answer: −1/2
15.
cos(7π/6)
Answer: −√3/2
16.
sin(11π/6)
Answer: −1/2
17.
cos(11π/6)
Answer: √3/2
18.
tan(3π/2)
Answer: Undefined
19.
sin(π)
Answer: 0
20.