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If `sin^3 2x cos 6x + cos^3 2x sin 6x = (3/4) sin 8x` Deduce the values of `a` for...
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`sin^3 2x cos 6x + cos^3 2x sin 6x = a`
`sin^3 2x cos 6x + cos^3 2x sin 6x = (3/4)sin8x`
`(3/4)sin8x = a`
`sin8x = (4a)/3`
We know that for an angle A;
So in our question we can say;
So the range of values for `a` is `a in [-3/4,3/4]`
Posted by jeew-m on September 20, 2013 at 11:12 AM (Answer #1)
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