2 years ago

Use the relationship between the sine and cosine functions To fill in each blank

Mathematics

1 answer:

Vesnalui [34]2 years ago

8 0

Answer:

sin 70° = cos (90° - 70°)

Step-by-step explanation:

You need to use the trigonometric ratios which states that:

sin α = cos (90° - α)

sin 70° = cos (90° - 70°)

sin 70° = cos 20°

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Step-by-step explanation:

when the slope is 7.2 you subtract

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3 years ago

How many different 4-question geometry quizzes can a teacher make if there are 7 different problems to test on?.

stich3 [128]

Answer:

35 quizzes

Step-by-step explanation:

We need to determine how many ways we can choose 4 questions out of 7 to make the quizzes.

We do this by using the formula $\displaystyle nCr=\frac{n!}{r!(n-r)!}$ which describes the number of ways we can choose $r$ objects given $n$ possible choices. So, if $n=7$ and $r=4$ , then:

$_4C_7=\frac{7!}{4!(7-4)!}\\\\_4C_7=\frac{7*6*5*4!}{4!*3!}\\\\_4C_7=\frac{210}{6}\\\\_4C_7=35$

Hence, the teacher can make 35 different geometry quizzes.

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2 years ago

99 to the power of 69

Nimfa-mama [501]

4.998370298991988e+137
Well, thats a large number. Trust me, im a "prodigy"

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2 years ago

Read 2 more answers

Mrs. Hilt bought 15 books. Sh paid $11 for each book. She later sold all 15 books for $25 each. What is the difference between t

sweet [91]

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3 years ago

Which expression has a positive quotient?

victus00 [196]

I believe (3) hope it’s correct :)

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3 years ago