what do you understand by ASTC rule
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The abbreviation for 'all sin cos tan' rule in trigonometry is ASTC. ... The first letter of the third word T indicates that tangent and its reciprocal is positive in the third quadrant. The first letter of the last word C indicates that cosine and its reciprocal are positive in the fourth quadrant.
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The abbreviation for 'all sin cos tan' rule in trigonometry is ASTC. ... The first letter of the third
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