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Nuetrik [128]
2 years ago
8

Find the value of x from this adjoining figure

Mathematics
1 answer:
Fiesta28 [93]2 years ago
5 0

Answer:

x=15^\circ

Step-by-step explanation:

Please refer to the attached figure for labeling of given diagram:

We are given the following angles:

\angle AOC = 3x^\circ\\\angle BOD = 2x^\circ\\\angle EOF = 7x^\circ

Angles opposite to each other when they are formed by crossing of two lines are known as vertically opposite angles. And vertically opposite angles are always equal to each other.

Using property of vertically opposite angles:

\angle EOF = \angle AOB = 7x^\circ

Line CD is a straight line, so \angle COD = 180^\circ

Also,

\angle COD = \angle COA+\angle AOB+\angle BOD = 180^\circ\\\Rightarrow 3x + 7x + 2x=180^\circ\\\Rightarrow 12x =180^\circ\\\Rightarrow x = \dfrac{180}{12}\\\Rightarrow x = 15^\circ

Hence, <em>answer</em> is x = 15^\circ.

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