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A + B = 90^(@) rArr cos A - cos B in...

`A + B = 90^(@) rArr cos A - cos B in`

A

[-1, 1]

B

`[-sqrt(2), sqrt(2)]`

C

`[-sqrt(3), sqrt(3)]`

D

[-2, 2]

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-PERIODICITY AND EXTREME VALUES-Practice Sheet (Exericise-I) Level-II (Straight Objective Type Questions)
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