a. Show that the equation cos 2 x = 2 sin x can be written as
Question:
a. Show that the equation cos2 x = 2 – sin x can be written as sin2x – sin x + 1 = 0.
b. Hence show that the equation cos2 x = 2 – sin x has no solutions.
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a To show that the equation cos2x 2 sin x can be written as sin2x sin x 1 0 we can use the trigonome...View the full answer
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Related Book For 
Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS
ISBN: 9781292183398
1st Edition
Authors: Greg Attwood
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