Given that cos A = 1/3, and that A is obtuse, a. Find the exact value
Question:
Given that cos A = − 1/3, and that A is obtuse,
a. Find the exact value of:
i. cos 2A
ii. sin A
iii. cosec 2A
b.
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a i b tan 2...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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