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weqwewe [10]
3 years ago
13

Which of the following are identities? Check all that apply.​

Mathematics
2 answers:
Hatshy [7]3 years ago
5 0

Answer:

b. cos²3x - sin²3x = cos6x

if its wrong sorry

hope this helps you☺️☺️

scoray [572]3 years ago
4 0

Answer:

B and D

Step-by-step explanation:

B.cos²3x-sin²3x=cos6x   ( as cos²a -sin² a = cos 2a)

D.(sinx+cosx)²=sin²x+cos²x+2sinxcosx=1+sin2x

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Solve for b.<br><br> 3 (b−4 )+ 5b = 44<br><br><br> b =
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fiasKO [112]

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8 0
3 years ago
Find the value of each variable:
Leona [35]

Answer:

5√3 = b

5 = d

10√3 = a

15 = c

Step-by-step explanation:

Sin60° = opp/hyp

sin60° = b/10

10sin60° = b

5√3 = b

Cos60° = adj/hyp

Cos60° = d/10

10Cos60° = d

5 = d

Sin30° = opp/hyp

Sin30° = 5√3/a

a = 5√3/Sin30°

a = 10√3

Tan30° = opp/adj

Tan30° = 5√3/c

c = 5√3/tan30°

c = 15

3 0
3 years ago
The graph below shows the solution set of which inequality?
ozzi

Answer:

B

Step-by-step explanation:

8 0
4 years ago
Read 2 more answers
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