Question

The measure of x in the figure, where L II BC is______
degrees.
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Answer 1

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75° + 45° + x = 180° (linear pair)

→ 120° + x = 180°

→ x = 180° - 120°

→ x = 60°

so, value of x is 60°

Answer 2

We know that the sum of straight angle is 180°..

So, x + 75 + 45 = 180

=>x=180°-120°

=>x=60

Therefore, the value of x is 60°