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810 А 30° E Given: Circle C. What is the value of angle x? B 99° 69° 132 30°

User Nayden Van
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In this problem you can reflect the small triangle and you will see that the angle D is equal to the angle x, and the angle E is equal to the angle B so we can sum tyhe internal angles of the big triangle to find x so:


x+81+30=180

And we solve for x so:


\begin{gathered} x=180-81-30 \\ x=69 \end{gathered}

the angles x is equal to 69º

User Nella
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