CAPE Pure Mathematics Unit 1 · May/June 2009 · Paper 1 · Question Q18
\frac{1}{\csc^2 x} \equiv
- (A)
\arccos(x)^2 - (B)
(\arccos x)^2 - (C)
\frac{\tan^2 x}{\sec^2 x} - (D)
\frac{\cot^2 x}{\csc^2 x}
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