A teacher asks two students to solve the equation 2 cos 2 x = 1 for
Question:
A teacher asks two students to solve the equation 2 cos2 x = 1 for −π < x < π. The attempts are shown below.
a. Identify the mistake made by Student A.
b. Identify the mistake made by Student B.
c. Calculate the correct solutions to the equation.
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Step by Step Answer:
a Cosine can be negative so do not reject C...View the full answer
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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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