Question

10. An angle is twice of its complement. Find the angle.
11. The ratio of an angle and its complement is 2:3. Find the angle.​

Answer 1

Answer:

$10)x + 2x = 90 \\ 3x = 90 \\ x = 30 \\ 30 \: and \: 60$

$2x + 3x = 90 \\ 5x = 90 \\ x = 18 \\ 2x = 36 \\ 3x = 54 \\ 36 \: and \: 54$

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Answer 2

$\huge\underline\mathfrak\pink{Answer⤵}$

Solution 10) 30° and 60°

Let an angle be,x

Given,

x+2x=90°

3x=90°

x=90°/3

x=30°

2x=60°

Solution 11) 36° and 54°

Let angle be,

x

Given,

Measures=2:3

Let 2:3 be,

2x,3x

2x+3x=90°

5x=90°

x=90°/5

x=18°

2x=36°

3x=54°

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