Triangle $ABC$ is inscribed in a circle and $AB$ is a diameter. A tangent is drawn at $C$. It

Question

Triangle $ABC$ is inscribed in a circle and $AB$ is a diameter. A tangent is drawn at $C$. It is given that $\angle BAC=42^\circ$. State $\angle ACB$, giving a reason. Find the angle between the tangent at $C$ and chord $BC$.

Accepted Answer

(a) $90^\circ$; (b) $42^\circ$.

Sec 3/4 E Math T11-Q06 - Combining angle properties of a circle

Sec 3/4 E Math T11-Q06 - Combining angle properties of a circle

Solution:

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