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1 Unit AS 1: Pure Mathematics

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Question 154

Solve cos⁡(3x−20∘)=−12\displaystyle \cos(3x-20^\circ)=-\frac12cos(3x−20∘)=−21​ for 0∘≤x<180∘0^\circ\leq x<180^\circ0∘≤x<180∘.

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1 Unit AS 1: Pure Mathematics Questions

  1. A Level
  2. /Maths
  3. /1 Unit AS 1: Pure Mathematics

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