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Arlecino [84]
4 years ago
13

Use the fundamental identities to fully simplify the expression

Mathematics
2 answers:
Lyrx [107]4 years ago
6 0

Hey!

Hope this helps... And we're super sorry that no answered your question...

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

3sin^3 x * csc(x) + cos^2 x + 2cos(-x) * cos(x) = ?

3sin^3 x * (1/sin) + cos^2 x + 2cos(x) * cos(x) = ? We know 2cos(-x) = 2cos(x) because of the opposite angle theorem: cos(-x) = cos(x)

3sin^2 x + cos^2 x + 2cos(x) * cos(x) = ?

3sin^2 x + cos^2 x + 2cos^2 x = ?

sin^2 x + cos^2 x + 2cos^2 x = ?

3sin^2 x + 3cos^2 x = ?

3 (sin^2 x + cos^2 x) = ?

3 * 1 = ?

= 3

Thepotemich [5.8K]4 years ago
3 0
Hello here is a solution :

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Julli [10]

Answer:

8.16 or 6.06

Step-by-step explanation:

final is 3.96

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3 years ago
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Lelechka [254]
1. sqrt 52 = 7.211 rounds to 7

2. irrational number

3. sqrt 441 = 21....rational

4. 12^2 + 3^2 = h^2
    144 + 9 = h^2
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5. 6^2 + b^2 = 18^2
    36 + b^2 = 324
    b^2 = 324 - 36
    b^2 = 288
    b = sqrt 288
    b = 16.97 rounds to 17 <==

6. 39^2 + 52^2 = c^2
    1521 + 2704 = c^2
    4225 = c^2
    sqrt 4225 = c
    65 = c
    (39 + 52) - 65 = 91 - 65 = 26 miles shorter <==

7. 4^2 + b^2 = 16^2
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     b^2 = 256 - 16
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8. ?
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4 years ago
HELP PLEASE 25 POINTS
Yuri [45]

Answer:

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Step-by-step explanation:

Brainly takes away half points by the way

7 0
3 years ago
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2 (twice the opposite i hope that's what you meant)

Step-by-step explanation:

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3 years ago
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Liono4ka [1.6K]
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