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SEAMO 2018 — Paper E — Grade 9–10 Question 16

SEAMO · SEAMO 2018 — Paper E — Grade 9–10

Question 16

In $\triangle ABC$, $9a^2+9b^2=19c^2$. Find $\frac{\cot C}{\cot A+\cot B}$.
  1. $\frac17$
  2. $\frac37$
  3. $\frac57$
  4. $\frac49$
  5. $\frac59$