If the sin 0° = 0, then which statement is true? a. cos 90° = 1 because the cosine and sine are complements b. cos 180° = 1 because the cosine and sine are supplements c. cos 90° = 0 because the cosine and sine are complements d. cos 180° = 0 because the cosine and sine are supplements

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Mathematics

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1 September, 07:14

If the sin 0° = 0, then which statement is true? a. cos 90° = 1 because the cosine and sine are complements b. cos 180° = 1 because the cosine and sine are supplements c. cos 90° = 0 because the cosine and sine are complements d. cos 180° = 0 because the cosine and sine are supplements

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Jeremiah Ali · Answer 1

Sin 0° = 0

Trigonometric rule is: sin x = cos (90° - x);

sin 0° = cos (90° - 0°) = cos 90° = 0

Answer: C) cos 90° = 0, because the cosine and sine are complements.