(main)[6]
Find the values of $x$ that satisfy $\cot 2x + \cot x = 3$ for $0^\circ < x < 180^\circ$.
Mathematics 9709 · AS & A Level · Trigonometry
Trigonometry — practice question
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Apply the correct $\tan 2A$ and $\cot A$ formulae so that an equation in $\tan x$ is obtained” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI