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zhannawk [14.2K]
2 years ago
5

Find sine and cosine if angle C please

Mathematics
1 answer:
laiz [17]2 years ago
4 0

Answer: sin=7/13,cos=2.sqrt30/13

Step-by-step explanation:

SOH COH TOA  

sin=opp/hyp,cos=adj/hyp

Use pyth. theorem to find the adjacent of C.

13^2 =7^ + b^2

169 = 49 + b^2

120 = b^2

sqrt120 = sqrtb

2.sqrt30 = b is the missing side.

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A square with an area of 64 in2 is rotated to form a cylinder. What is the radius of the cylinder?
romanna [79]
The area of the square is calculated through the equation,

                               Area = e²

where e is the measure of sides.
 
From the given,

                              64 = e²
                               e = sqrt 64 = 8 inches

The length of the side of the square rotated to form the cylinder is the diameter of the base of the cylinder. To get the radius, we divide the diameter by 2.

                             radius = 8 inches / 2 = 4 inches

Thus, the radius of the cylinder is equal to <em>4 inches</em>. 
5 0
3 years ago
NEED HELP ASAP!!Approximately 10% of Wunderlich's population is left-handed. If the school has a population of 1,200 students, h
Alexxx [7]

Answer:

B. 120

Step-by-step explanation:

10% = \frac{10}{100}

No. of left-handed students = \frac{10}{100} × 1,200

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8 0
3 years ago
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The car traveled 180 miles on 6 gallons of gas, so it got 30 miles per gallon. So divide 1260 by 30 to find the number of gallons needed to go 1260 miles.

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klemol [59]

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3 years ago
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