The diagram shows a sheet of cardboard $ABCD$. $AD = 10$ cm, $\angle ABC = 46^\circ$, \(\angle

Question

The diagram shows a sheet of cardboard $ABCD$. $AD = 10$ cm, $\angle ABC = 46^\circ$, $\angle BAC = 75^\circ$, $\angle ACD = 33^\circ$ and $\angle ADC = 90^\circ$. Calculate $AC$, $BC$ and, the area of the triangle $ABC$. Triangle $ADC$ is folded along $AC$ to form triangle $AEC$. Calculate the length of $EC$ and, $BE$.

Accepted Answer

(a)(i) $18.4$ cm (ii) $24.7$ cm (iii) $194$ cm$^2$ (b)(i) $15.4$ cm (ii) $12.7$ cm

IP2U12 Exercise Trigonometry II (also for 3EM U7 Worksheet) Q11

IP2U12 Exercise Trigonometry II (also for 3EM U7 Worksheet) Q11

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Handwritten & Typed Solutions