

Double Angle Trigonometric Identities Practice
Presentation
•
Mathematics
•
9th - 12th Grade
•
Hard
Joseph Anderson
FREE Resource
15 Slides • 5 Questions
1
HPC 5.5
Day 1
Double Angle Identities
2
Cos 2a = Cos (a + a)
Use the Sum formula for cosine to rewrite cos(a + a) in terms of sine and cosine.
3
Multiple Select
Cos 2a = ?
cos2a−sin2a
2cos2a−1
1−2sin2a
4
5
6
7
8
9
10
11
Multiple Select
Solve: sin2x−sinx=0
0
π
3π
32π
35π
12
13
14
tan 2Θ
15
Multiple Select
sin 2u
Evaluate, where u is in the first quadrant:
Sin u = 53
524
2524
5024
2512
16
Multiple Select
sin u=53 Evaluate, where u is in the first quadrant: tan 2u
724
247
5024
43
17
Multiple Select
sin u=53 Evaluate, where u is in the first quadrant: cot 2u
724
247
5024
43
18
19
Homework
Page 390
# 7, 12, 14, 15, 21, 22, 25
20
HPC 5.5
Day 1
Double Angle Identities
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