IB Maths AA SL AA 3.2 Radians and circular functions questions

Exam-style questions in the shape of Paper 1 and Paper 2, with full markschemes. Read the markscheme, or type, photograph or draw your answer and get it marked.

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Question 1

Paper 2, calculatorMedium6 marks

In triangle $ABC$ angles $A,B,C$ are measured in degrees. Using the usual notation for sides opposite the corresponding angles, $A=30^\circ$ $a=6\text{ cm}$ and $b=9\text{ cm}$

(a)

Show that $\sin B=0.75$

[2]

(b)

Hence determine all possible values of $B$ and the corresponding values of $C$ correct to the nearest $0.1^\circ$ Explain why the sine rule permits two possibilities here.

[4]

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