The diagram shows two circles with a common tangent at T. The radius of the smaller circle is 5 cm and BT=BP. ACBP is a tangent to the circle with centre O. Calculate(adsbygoogle = window.adsbygoogle || []).push({});

(a) The length of TP

My attempt

- I tried to solve the question by finding complimentary angle of angle X, which is 90 degree - 32.5 degree(angle X) = 57.5 degree, and by using Trigonometry to calculate half the length of TP, Tan 57.5 degree multiply 5 cm, = 7.85 cm , and then multiply by 2, 7.85 cm x 2, the answer from me is 15.70 cm, but the correct answer is 17.15 cm.

Thanks a lot.

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# Homework Help: Please help on this Common Tangents Problem

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