Solve, for 0≤x≤180∘0 \leq x \leq 180^\circ0≤x≤180∘, the equation
sin(x+10∘)=32\displaystyle \sin(x + 10^\circ) = \frac{\sqrt{3}}{2}sin(x+10∘)=23
cos2x=−0.9\cos 2x = -0.9cos2x=−0.9, giving your answers to 1 decimal place.
10 exam-style questions on Edexcel A Level Old Maths Trigonometry. Each one has a worked solution and a mark scheme showing where the marks go.