Solve tanx=−2.5\tan x=-2.5tanx=−2.5 for −180∘≤x<180∘-180^\circ\leq x<180^\circ−180∘≤x<180∘, giving answers to 1 decimal place.
42 exam-style questions on CCEA A Level Maths 1.4.6 Trigonometry. Each one has a worked solution and a mark scheme showing where the marks go.