(a) Express cosx-2sinx in the form Acos(x+a). (b) Hence, or otherwise, solve the equation cosx-2 sinx=1 for 0° ≤x≤360°, giving your answer to the nearest degree.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
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Chapter7: Analytic Trigonometry
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Level 1
Question 1
(a) Express cosx-2sin x in the form Acos(x+a).
(b) Hence, or otherwise, solve the equation cosx-2 sinx=1 for 0° ≤x≤360°, giving your answer to the
nearest degree.
Transcribed Image Text:Level 1 Question 1 (a) Express cosx-2sin x in the form Acos(x+a). (b) Hence, or otherwise, solve the equation cosx-2 sinx=1 for 0° ≤x≤360°, giving your answer to the nearest degree.
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