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nlexa [21]
2 years ago
12

What is the value of y?

Mathematics
1 answer:
lord [1]2 years ago
5 0

Answer:

15

Step-by-step explanation:

Angle c is 180 - 146 = 34

All 3 angles add to 180:

(5y + 3) + (4y + 8) + 34 = 180

9y + 45 = 180

9y = 135

y = 15

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sin(x+y)=sin(x)cos(y)-cos(x)sin(y)

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using pythagorean identity

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3 years ago
Classify the pair of angles. Then find the value of x.
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<h3>3)</h3>

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<h3>4)</h3>

<em>supplementary angles</em>

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7x = 180 - 40

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<em>divide both sides by 7</em>

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x = 140/7

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<h3>5)</h3>

<em>complimentary angles</em>

<em>complimentary angles add up to 90</em>

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4x + 34 = 90

<em>subtract 34 from both sides of the equation</em>

4x + 34 - 34 = 90 - 34

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<em>divide both sides by 4</em>

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x = 56/4

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