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| Math Central | Quandaries & Queries |
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Question from Agnes, a student: How I can solve this question : Simplify (4- 4cos^4 x)/(sin^2 x) and write in terms of sin x |
Hi Agnes,
I can help with some hints.
- Take out the common factor in the numerator.
- Look for a difference of squares to factor.
- Use the fact that $\sin^2 x + \cos^2 x = 1.$
Penny
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