Here you go!! Hope my answer also assists you in the future!! :))
The double angle formula for the sine is

The right hand side is exactly your expression, where 
So, rewriting the expression from right to left, we have

Answer:
It would change by 30 points
Step-by-step explanation: If you block the rest of the numbers you would see 63 change to 93. 93-63=30 so it would change by 30 points
17. Area of triangle: 1/2bh
1/2 * 12 * 15
1/2 * 180
=90 cm^2
18. Area of trapezoid: 1/2 h (b1 + b2)
1/2 * 8 ( 12 + 15.4)
4 * 27.4
= 109.6 cm^2
The most appropriate choice for square root will be given by-
lies between 3 and 4
What is square root of a number?
Number raised to the power
is the square root of the number.
Here

3.464 lies between 3 and 4
lies between 3 and 4
To learn more about square root of a number, refer to the link:
brainly.com/question/3617398
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