In the diagram, /TP/ = 12cm and it is 6cm from O, the centre of

MATHEMATICS

WAEC 2009

In the diagram, /TP/ = 12cm and it is 6cm from O, the centre of the circle, Calculate ∠ TOP

A. 120°
B. 90°
C. 60°
D. 45°

Correct Answer: B. 90°

Explanation

Tan \(\theta = \frac{6}{6} = 1\)

\(\theta\) = tab - 1(1) = 45^o

< top = 20

= 2 x 45^o = 90^o

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