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Damm [24]
3 years ago
14

Given cosx= 4/5 when (3π/2) < x<2π find sin2x

Mathematics
1 answer:
jarptica [38.1K]3 years ago
8 0

Answer:

D -24/25

Step-by-step explanation:

sin(2x) = 2sin(x)cos(x)

cos(x) = ⅘

sin²(x) = 1 - cos²(x) = 1 - (⅘)²

sin²(x) = 9/25

sin(x) = -⅗

(Because 4th quadrant)

sin(2x) = 2(-⅗)(⅘)

= -24/25

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horrorfan [7]

Answer:

∠A: 98 (Is a vertical angle to the 98 degrees)

∠D: 151 (180-29)

∠H: 29 (Is a vertical angle to the 29 degrees)

∠I: 29

∠J: 151

∠M: 151 (Vert angle to <J)

∠R: 82 (180-98)

5 0
2 years ago
PLEASE SHOW WORK ILL GIVE BRAINLIEST DUE TODAY!!!
murzikaleks [220]

Answer:

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Step-by-step explanation:

Remember the Order of Operations:

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14+<u>9 x 18</u>-7

<u>14+162</u>-7

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9

6 0
3 years ago
You purchased $132.49 worth of wheels and bearings for your skateboards. The shop charges $15 per board to install them. The tot
Thepotemich [5.8K]

Answer:

4

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192.49-132.49=60

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The house is in the coordinate plane is (4.5, -1.5).

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