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LenKa [72]
3 years ago
6

Prove sin^2 π/6 + cos^2 π/3 - tan^2 π/4 = -1/2​

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
7 0

=(

2

1

)

2

+(

2

1

)

2

−1

2

=

2

−1

Therefore, L.H.S = R.H.S

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Notation scientifique de 40075017
Temka [501]

Answer:

4.0075017*10^7

Step-by-step explanation:

move the decimal place left 7  

5 0
4 years ago
A swimming pool measures 35 feet wide by 50 feet long. What is the ratio of the length to the perimeter in simplest form? Perime
9966 [12]
So, let’s find out the numbers needed to form the ratio. The length of the swimming pool is 50 ft long. We need to find the perimeter. 2(50+35)
2*85
170.
So, the perimeter is 170 ft. Now we need to form the ratio. Length is first, then the perimeter.
50:170 is your ratio, but we can simplify it to 5:17. Hope this helped!
3 0
3 years ago
What is <br> 1/5 * 1/6x = - 33
azamat

Answer:

x = -990

hope it helped!

7 0
3 years ago
Read 2 more answers
Estimate. Then record the product. 640×3=
ExtremeBDS [4]
You could estimate by doing 600x3=1800
(becasuse of the 0's in 600 it is easier to do 6*3=18 and then add two 0's to the end 1800)
then you simply multiple 640x3=1920
4 0
3 years ago
Question 1 of 10
Zanzabum

Answer:

A: 40 degrees

Step-by-step explanation:

Since every triangle is 180 degrees, you can start off by subtracting 50 from 180 since that side does not contain a y for you to solve.

Since the other two sides do have a y in them, you would set 130 degrees equal to y+10 and 2y:

130=y+10+2y

Then you would isolate the y's by subtracting 10, and you would add y and 2y together to get:

120=3y

Finally, you would divide 120 by 3 to get your answer, 40=y.

Hope this helps!

8 0
4 years ago
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