a. Sketch the graph of y = 1 + 2 sec in the interval
Question:
a. Sketch the graph of y = 1 + 2 sec θ in the interval −π ≤ θ ≤ 2π.
b. Write down the θ-coordinates of points at which the gradient is zero.
c. Deduce the maximum and minimum values of 1/1 + 2 sec Ø, and give the smallest positive values of θ at which they occur.
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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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