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dimulka [17.4K]
3 years ago
12

Explain why sin(90) =1

Mathematics
1 answer:
gregori [183]3 years ago
3 0
When talking about the unit circle, it’s important to remember that sin = y-value, and cos = x-value. When you move 90 degrees in quadrant order (counterclockwise), you end up with a y-value of 1. Therefore, sin(90) would equal 1 (and cos(90) would be 0).
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76.<br>175/50<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B%20%5Csqrt%5B3%5D%7B175%7D%20%7D%7B%20%5Csqrt%5B3%5D%7B50%7D%20%
kramer

Answer:

Step-by-step explanation:

Factorize 175 and 50

175 = 5 * 5 * 7

50  = 5 * 5 * 2

\frac{\sqrt[3]{175}}{\sqrt[3]{}50}=\sqrt[3]{\frac{175}{50}}\\\\\\ =\sqrt[3]{\frac{5*5*7}{5*5*2}}\\\\\\=\sqrt[3]{\frac{7}{2}}

7 0
4 years ago
Select TWO famous canals that connect oceans and seas.
svetoff [14.1K]
The Suez Canal in Egypt connects the Mediterranean to the Red Sea. The Panama Canal in Panama connects the Pacific and Atlantic Oceans.
6 0
3 years ago
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1) What is the value of x?<br> (5x)<br> ºx<br> (3x + 18)
tatuchka [14]

Answer:

We know that 5x-3x =2x

So x(5x-3x)=x×2x

=(2x)^2

=4x^2

Which is given as 18.

X^2=18÷4

=4.5

So x=root over 4.5

Which is approximately 2.123

Step-by-step explanation:

7 0
3 years ago
38 1/4 as a decimal.....
Maurinko [17]
38 1/4 as a decimal would be 38.25 because 1/4 is 0.25 add 38 to that would be 38.25
6 0
4 years ago
Read 2 more answers
Find the length of side x in simplest radical form with a rational denominator.
Hitman42 [59]

Answer:

x =\sqrt 2

Step-by-step explanation:

  • Given is a 30° - 60° - 90° triangle.

  • side x lie opposite to 30° angle

  • \implies x = \frac{1}{2}\times \sqrt 8

  • \implies x = \frac{1}{2}\times 2\sqrt 2

  • \implies x =\sqrt 2
6 0
2 years ago
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