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nirvana33 [79]
3 years ago
7

Sin30=cos(2x) then x=

Mathematics
1 answer:
Paraphin [41]3 years ago
8 0

Answer:

x = 30.

Step-by-step explanation:

Use the identity sin A = cos (90 - A).

So sin 30 = cos (90 - 30) = cos 60.

cos 2x = cos 60

so x = 30.

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Answer: 183.26

Explanation: see below

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3 0
2 years ago
Which similarity postulate or theorem can be used to verify that the two triangles shown below are similar?
Vesnalui [34]

Answer:

C. Similarity cannot be determined

Step-by-step explanation:

Two triangles are considered similar when all three angles are equal and also when the ratio of their corresponding side lengths are equal.

Since we only know the angles of the two triangles given and we are not given the side lengths to determine if their corresponding ratio is the same, we therefore cannot determine if the two triangles are similar in anyway.

3 0
3 years ago
yesterday at football practice, Han made 12 of his field goal attempts. Today he made 75% as many as he did yesterday. How many
solong [7]

Answer:

9

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7 0
3 years ago
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What is the frequency of a wave that has a wave speed of 30 m/s and a wavelength of 0.60 m?
maksim [4K]

Answer:

wave length = 30/6 = 5m

Step-by-step explanation:

wave travels 30m in one second.

wave completes 6 cycles in one second.

7 0
3 years ago
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Answer:

Is there multiple choice to this question?

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