alleryIs cos A the product of cos and A?
AOnly when A is
BOnly for 45 deg
CNo, it is a ratio
DYes, always is
Answer & Solution
Correct answer: C. No, it is a ratio
1. The letters cos do not stand for a number.
2. They name a function of the angle.
3. So cos A is not a product; it is a ratio.
4. The answer is no, it is a ratio.
_Source: syllabus Mathematics, Ch 8 'Introduction to Trigonometry'_
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