Without using a calculator, show that cos 60cos 45 = cos 30
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Without using a calculator, show that cos² 60°cos² 45° = cos² 30°
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The identity cos 1 sin can be used to show that cos 60cos 45 cos 30 Starting w...View the full answer
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Related Book For
Cambridge IGCSE And O Level Additional Mathematics
ISBN: 9781510421646
1st Edition
Authors: Val Hanrahan, Jeanette Powell
Question Posted:
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