The diagram shows a quadrilateral $ABCD$. The length of $AB$ is $5$ m, the length $BC$ is \(

Question

The diagram shows a quadrilateral $ABCD$. The length of $AB$ is $5$ m, the length $BC$ is $8$ m and the length of $AD$ is $4$ m. Angle $ABC$ is $60^\circ$ and angle $ADC$ is $100^\circ$. Calculate the length of $AC$. Calculate angle $ACD$. Find the area of the quadrilateral $ABCD$, correct to the nearest whole number.

Accepted Answer

(i) $7\text{ m}$ (ii) $34.2^\circ$ (iii) $27\text{ m}^2$

IP2U12 Exercise Trigonometry II (also for 3EM U7 Worksheet) Q8

IP2U12 Exercise Trigonometry II (also for 3EM U7 Worksheet) Q8

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