Question

Two angles are supplementary to each other. The larger of two supplementary angles exceeds the smaller by 20°. Then, the smaller angle is. (a) 60º (b) 80º (c) 65º (d) 75º​

Answer 1

Answer:

$x + x + 20 = 180 \\ 2x + 20 = 180 \\ 2x = 180 - 20 = 160 \\ 2x = 160 \\ x = 160 \div 2 \\ x = 80 \\ big \: angle = 80 + 20 = 100$

this helps you

Answer 2

Answer:

Step-by-step explanation:

So, x+y=180  

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−(1)

x=y+18

⇒y+18+y=180  

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∴y=81;x=99  

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