The measure of an angle in degrees, grades and radians be D,G and C respectively then the relation between themD90=G100=2Cπ but 1c=180π°=57°.17'44.8"then the value of cos1cis
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a
<12
b
12
c
>12
d
0
answer is C.
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Detailed Solution
1c=57°,17',44.8"<60°∴cos1c>cos60°=12Hence cos1c>12 ∵ cos is decreasing in 0,π2