Question Bank - Mathematics

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Which of the given relation is true?

A.
cos 1° < cos 1
B.
cos 1° = cos 1
C.
cos 1° > cos 1
D.
\(\cos 1^\circ=\dfrac{\pi}{180}\sin 1\)

Solution:

Concept: We know that, ?radian = 180° ? 1 = 180°/? = 57.3° cos 1° = 0.999 ------(i)cos 1 = cos 57.3° = 0.540 -------(ii)Calculation:From Eqn (i) and (ii) we can say that cos 1° > cos 1

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