The sine, cosine and tangent of 210o are respectively
...The sine, cosine and tangent of 210o are respectively
12, √32, √32
12, √32, √33
12, √32, √32
−12, √−32, √33
Correct answer is D
210o = 180o - 210o = - 30o
From ratio of sides, sin -30o = -12
Cos 210o = 180o - 210o = -30o
= cos -30o = −32
But tan 30o = 1√3, rationalizing this
= 1√3 x √3√3 = √33
∴ = −12, √−32, √33
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