TMUA 2022 Paper 1 Q16 — Worked Solution

P1·Trigonometry, Algebra & Surds·7.0Official · 2022 · Q16

hidden-quadraticpythagorean-identitytransform-roots

The solutions to

7 x^{4} - 6 x^{2} + 1 = 0

are

\pm cos θ

and

\pm cos β

.Which one of the following equations has solutions

\pm sin θ

and

\pm sin β

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