If cos θ = 2/3, write the value of 
.
Given: cos θ = 2/3
Thus, sec θ = 1/cos θ
= 3/2
Now, consider 
= 
= [(1/2)/(5/2)]
= 1/5
19
If cos θ = 2/3, write the value of .
Given: cos θ = 2/3
Thus, sec θ = 1/cos θ
= 3/2
Now, consider =
= [(1/2)/(5/2)]
= 1/5