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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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Find the solution of this system of equations 5x - 6y =-90 -10x - 6y =-90
ExtremeBDS [4]

5x - 6y = -90

-10 x - 6y = -90

Subtracting,

15x = 0

x = 0

y = -90/(-6) = 15

Answer: x=0, y=15


8 0
3 years ago
TAKE ANY UNMARKED BOWL OR GLASS AND FILL IT EXACTLY 3/5 FULL WITH WATER.
Wittaler [7]

Answer:

Take a glass, and fill it completely with water.

Now, pour that water in a marked bowl and measure how much water is in the bowl, that amount of water will be 100% of the total water that the glass can have.

Now you need to pour 3/5 of the water back in the glass, it is easier for water until the water in the bowl is exactly 2/5 of the initial amount.

You can do this as follows.

2/5 = 0.4 or 40% in percentage form.

Then if the amount of water in the marked bowl is A, the amount of water that must remain in the marked bowl is A*0.4

Then drop the water in the glass until the water in the marked bowl is the quantity that you found previously.

In this way, you can be sure that the glass is 3/5 full of water.

8 0
3 years ago
The shortest distance between two points is a straight line. Explain this statement in terms of the triangle inequality theorem
Firlakuza [10]

Answer:

the answer would be.......

Step-by-step explanation:

a straight line is the shorest distance because a triangle only has straight lines

4 0
3 years ago
Which exponential function has a growth factor of ?
ludmilkaskok [199]
Letter B would be the correct answer
8 0
3 years ago
Read 2 more answers
What is the product of (-0.5)(-1.2)(-5.22)?<br><br>0. -9.8<br>0. -3.132<br>0. 3.132<br>0. 9.8​
Mama L [17]

Answer:

The answer is B or -3.132

Step-by-step explanation:

You are multiplying 2 negatives and a positive, so it guarantees it will be negative! Hope this helps!

5 0
3 years ago
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