The following diagram shows triangle $ABC$ in which the length of $AB$ is $7.5$ cm and the len

Question

The following diagram shows triangle $ABC$ in which the length of $AB$ is $7.5$ cm and the length of $AC$ is $5$ cm. It is given that triangle $ABC$ has an area of $18$ cm$^{2}$, find the obtuse angle $BAC$.

Accepted Answer

$106.3^\circ$

Solving Inverse Trigonometric Equations to One Decimal Place

Solving Inverse Trigonometric Equations to One Decimal Place

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