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tan(-30)=tan(330)=-1/√3
Explanation:
An angle of 30° is found is a right-angled triangle with sides in the ratio : 1:2:√3
tan30°=opp adj=1/√3
However, an angle of -30°
lies in the 4th quadrant. The opposite side (y value) is negative, which causes tan values in the 4th quadrant to be negative.
(tan -30° = tan 330°)
Therefore
tan(-30)=-1/√3
Explanation:
An angle of 30° is found is a right-angled triangle with sides in the ratio : 1:2:√3
tan30°=opp adj=1/√3
However, an angle of -30°
lies in the 4th quadrant. The opposite side (y value) is negative, which causes tan values in the 4th quadrant to be negative.
(tan -30° = tan 330°)
Therefore
tan(-30)=-1/√3
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