Q. 22 A5.0( 3 Votes )

If sec θ = 2, then find the values of other t–ratios of angle θ.

Answer :

Given: sec θ = 2



We know that,




Let,


BC = 1k and AC = 2k


where, k is any positive integer.


In right angled ∆ABC, we have


(AB)2 + (BC)2 = (AC)2 [by using Pythagoras theorem]


(AB)2 + (1k)2 = (2k )2


(AB)2 + k2 = 4k2


(AB)2 = 4k2 – k2


(AB)2 = 3k2


AB = k3


Now, we have to find the value of other trigonometric ratios.


We, know that










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