Which of the following is correct expression to find the hypotenusal allowance used to compute horizontal distance on a sloping ground?, where θ = Angle of sloped ground
1
Measured length on sloped ground (1 - cosθ)
2
Measured length on sloped ground (1 - secθ)2
3
Measured length on sloped ground(secθ - 1)
4
Measured length on sloped ground (1 - cosθ)2