allerycosec A is the reciprocal of:
Atan A
Bcot A
Csin A
Dcos A
Answer & Solution
Correct answer: C. sin A
1. Three ratios are defined as reciprocals of the first three.
2. cosec pairs with the first of them.
3. cosec A is the reciprocal of sin A.
4. So the answer is sin A.
_Source: syllabus Mathematics, Ch 8 'Introduction to Trigonometry'_
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