1:3, 9:28, 4:12, 2:6, 6:18 which one is the odd one out?
2 answers:
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Recall the double angle identity for cosine:
It follows that
Since 0° < 22° < 90°, we know that sin(22°) must be positive, so csc(22°) is also positive. Let x = 22°; then the closest answer would be C,
but the problem is that none of these claims are true; cot(32°) ≠ 4/3, cos(44°) ≠ 5/13, and csc(22°) ≠ √13/2...
Therefore, f(c) = 3c+5
OPTION B is the correct answer
