Answer:
Option(1)
Step-by-step explanation:
By applying secant rule in the given right triangle,
secθ =
From the picture attached,
Opposite side of angle θ = 5 units
By applying Pythagoras theorem,
(Hypotenuse)² = (leg 1)² + (leg 2)²
= (10)² + 5²
= 125
Hypotenuse = √125
= 5√5
Now substitute these values in the expression of secθ,
secθ =
secθ = √5
Option (1) is the correct option.