What is the maximum value of 1/cos A?
1 point
(a) 0
(b) 1
(c) not defined
(d) 1/2
Answers
Given : 1/cos A
To Find : Maximum value of 1/cosA
Solution:
SecA = 1/cosA
Range of secA = (-∞ , -1] U [1 , ∞ ) or R - (-1 , 1)
Hence Maximum value goes till infinity
Hence maximum value of secA is not defined
Therefore maximum value of 1/cosA is not defined
so correct option is option c) not defined
additional Info
Range of Different trigonometric function
sin , cos [-1 , 1]
sec , Cosec (-∞ , -1] U [1 , ∞ ) or R - (-1 , 1)
tan , cot R
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