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almond37 [142]
3 years ago
12

Find the exact value of sin(20) using the double-angle formula given: sin(0) = -4/5 , π<0<3π/2

Mathematics
1 answer:
viktelen [127]3 years ago
5 0

Answer:

I think its A

Step-by-step explanation:

Sin(20) = 0.91294525072 which in a fraction it would be 24/25

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y=2(2x+3)

Step-by-step explanation:

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What is the solution (x,y) to the system of equations given? 2 x + 4 y = − 16 2x+4y=−16 2 y − x = = 16 2y−x==16
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Answer:

(-12,2)

Step-by-step explanation:

2x + 4y = -16

2y - x = 16

Multiply the bottom part by 2.

2x + 4y = -16

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Add the equations and the answers to the equations up, and they will equal each other.

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3 years ago
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Step-by-step explanation:

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Step-by-step explanation:

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