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Pavlova-9 [17]
2 years ago
5

What expression is equivalent to 8x - 2y +x + x​

Mathematics
1 answer:
Arada [10]2 years ago
3 0

Answer:

66

Step-by-step explanation:

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2/3 - (30 divided by 5) + 9=
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2^3 - (30 / 5) + 9

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Cos (-Ø)= √3/3 sinØ <0 what is the value of sinØ?
Inga [223]

Answer:

sin∅= - √6/3

Step-by-step explanation:

Trigonometric function cos is even function which mean:

cos (-∅) = cos ∅

Trigonometric function sin is odd function which mean:

sin (-∅) = - sin∅  => sin∅ < 0

The basic trigonometric equation reads in this case with angle marked ∅:

sin²∅ + cos²∅ = 1  => sin²∅ = 1 - cos²∅ => sin²∅ = 1 - ( √3/3 )² =>

sin²∅ = 1 - (3/9) => sin²∅ = 1 - (1/3) = (3/3) - (1/3) = 2/3 => sin∅ = - √(2/3) =>

sin∅ = - √2/√3 => sin∅ = - √6/3

God with you!!!


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3 years ago
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Step-by-step explanation:

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