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secondary 4 | A Maths
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Date Posted: 3 years ago
Views: 258
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Hello, this is how I did it. Since both sides of the equation has “2x”, you can sub 2x = y, and no need to use the cos2x or sin2x formulas. Hope this helps!
Date Posted:
3 years ago
Actually, secant is 1 divided by cosine…
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