a) Solve the equation 4 sinx + 7 cos x = 7 for 0 x
Question:
a) Solve the equation 4 sin²x + 7 cos x = 7 for 0° ≤ x ≤ 360°.
b) Hence solve the equation 4 sin²(θ + 20)° +7 cos (θ + 20)° = 7 for 0° ≤ θ ≤ 360°.
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a We can use the identity cosx sinx 1 to write sinx 1 cosx Substituting into the equation and rearra...View the full answer
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Related Book For
Complete Pure Mathematics 1 For Cambridge International AS & A Level
ISBN: 9780198427438
2nd Edition
Authors: Jean Linsky, Brian Western, James Nicholson
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