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Asher Falcon TMUA Paper 1 · Q2

Paper 1Trigonometry

If f(sin⁡(x))=0f(\sin(x))=0 has a solution at x=π2x=\frac\pi2, which of the following xx could be a solution to

2f(2sin⁡(x))=0?2f(2\sin(x))=0?
Aπ\pi
Bπ2\frac\pi2
Cπ3\frac\pi3
Dπ4\frac\pi4
Eπ6\frac\pi6
F3π2\frac{3\pi}2
G7π6\frac{7\pi}6
H5π4\frac{5\pi}4
IThere is no such xx

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