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fgiga [73]
3 years ago
5

How do we know the angle of 45 degrees is always equal to the square root of 2 over 2?

Mathematics
1 answer:
stellarik [79]3 years ago
8 0
The question is not correct, you mean the the sine and cosine of 45 degrees is always square root 2 over 2. 

Well you need to know how the sine and cosine are calculated. I would search in google for "sine and cosine in a unit circle". There is a very good Khan academy video that explains this in 10 minutes. Watch and learn :-)
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Suppose Y varies directly with x, and y = 25 when x = 140. what is the value of x when y = 36?
Tema [17]

25y.......140x

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Cross multiply

25x= 36*140

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x= 1008/5

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When y=36 the x will = 201.6


I hope that's help !


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3 years ago
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nevsk [136]

Answer: Thursday

Step-by-step explanation:

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Hope This Helps!

5 0
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alina1380 [7]

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