In triangle $ABC$, $BC=10$ cm, $AC=8$ cm and $\angle BAC=72^\circ$. Calculate the acute valu

Question

In triangle $ABC$, $BC=10$ cm, $AC=8$ cm and $\angle BAC=72^\circ$. Calculate the acute value of $\angle ABC$, giving your answer correct to 1 decimal place. Explain whether a second triangle satisfying the given information is possible.

Accepted Answer

(a) $49.5^\circ$; (b) no second triangle is possible.

Sec 3/4 E Math T06-Q05 - Deciding whether a second triangle is possible

Sec 3/4 E Math T06-Q05 - Deciding whether a second triangle is possible

Solution:

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