(b) sin 2x
Mathematics, 04.12.2021 08:50 rayzambr
*16. Given that cos x= k and that x is acute, express in terms of k,
(a) cos 2x
(b) sin 2x
(c) cot 2x
(d) sin 1/2x
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*16. Given that cos x= k and that x is acute, express in terms of k,
(a) cos 2x
(b) sin 2x
(b) sin 2x
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