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3 years ago

Sin 7A = cos 3A, then m∠A is what?

Mathematics

1 answer:

lbvjy [14]3 years ago

8 0

Answer:

m∠A = 9°

Step-by-step explanation:

$\sin 7A = \cos 3A \\ \\ \sin 7A = \sin(90 \degree - 3A) \\ \\ 7A = 90 \degree - 3A\\ \\ 7A + 3A= 90 \degree \\ \\ 10A= 90 \degree \\ \\ A = \frac{90 \degree}{10} \\ \\ m \angle A =9 \degree$

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coldgirl [10]

Answer:

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Step-by-step explanation:

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3 years ago

Which of the following is the major negative aspect of crossover designs for research studies? A. Prohibitive cost B. Residual e

Zinaida [17]

Answer:

D. Incomplete randomization

Step-by-step explanation:

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3 years ago

One container is filled with mixture that is 25% acid. A second container is filled with a mixture that is 55% acid. The second

algol13

Answer:

Therefore the third container contains $\frac{735}{17}\%$ = 43.23 % acid.

Step-by-step explanation:

Given that, One container is filled with the mixture that 25% acid. 55% acid is contain by second container.

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Since the volume of second container is 55% larger than the first.

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$=\frac{155}{100}V$ cubic unit.

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Total amount of acid $=(\frac{25}{100}V+\frac{8525}{10000}V)$ cubic unit.

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3 years ago

I need help solving 11 3/4 minus 8 2/10

melomori [17]

Answer:

The answer is 3 11/20

Step-by-step explanation:

Subtract whole numbers, 11 - 8 = 3

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hope this helps! :D

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3 years ago

An air conditioning system can circulate 320 cubic feet of air per minute. How many cubic yards of air can it circulate per minu

Agata [3.3K]

Step-by-step explanation:

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3 years ago