A triangle has two sides of lengths 8 cm and 11 cm and area $22\text{ cm}^2$. The angle between th

Question

A triangle has two sides of lengths 8 cm and 11 cm and area $22\text{ cm}^2$. The angle between these sides is $\theta$. Find the two possible values of $\theta$.[3] Given that the triangle has an obtuse included angle, state $\theta$.[1]

Accepted Answer

(a) $30^\circ$ or $150^\circ$ (b) $150^\circ$

Two angles with the same area

Two angles with the same area

Solution:

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