for the angles ℼ/6, 5ℼ/6, 7ℼ/6 and 11ℼ/6, the following statements are given statement i) these angles in degrees are, respectively, 30º, 250º, 210º, and 300º statement ii) they are all part of the general solution θ=ℼ/6 + 2nℼ, nE I statement iii) the values of sin(7ℼ/6) and cos (5ℼ/6) are both negative   Which is the true statement?

Calculus: Early Transcendentals
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Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
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for the angles ℼ/6, 5ℼ/6, 7ℼ/6 and 11ℼ/6, the following statements are given

statement i) these angles in degrees are, respectively, 30º, 250º, 210º, and 300º

statement ii) they are all part of the general solution θ=ℼ/6 + 2nℼ, nE I

statement iii) the values of sin(7ℼ/6) and cos (5ℼ/6) are both negative

 

Which is the true statement?

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