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10 November, 15:19

Which pair are equal trig values? A) tan 45° and sin 45° Eliminate B) sin 40° and sin 50° C) sin 36° and cos 54° D) cos 65° and sin 65°

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  1. 10 November, 17:57
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    C

    Step-by-step explanation:

    note that sin x = cos (90 - x) ← Cofunction identity

    If x = 36 then 90 - x = 90 - 36 = 54

    Hence sin 36° = cos 54° → C
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