a. Express 0.3 sin 0.4 cos in the form R sin ( ),
Question:
a. Express 0.3 sin θ − 0.4 cos θ in the form R sin (θ − α)°, where R > 0 and 0 < α < 90°. Give the value of α to 2 decimal places.
b.
i. Find the maximum value of 0.3 sin θ − 0.4 cos θ.
ii. Find the value of θ, for 0 < θ < 180 at which the maximum occurs.
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Related Book For
Pearson Edexcel A Level Mathematics Pure Mathematics Year 2
ISBN: 9781292183404
1st Edition
Authors: Greg Attwood, Jack Barraclough, Ian Bettison, David Goldberg, Alistair Macpherson, Joe Petran
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