TANGENT EXPERIMENT

OBJECTIVE :           To use the tangent ratio to calculate the angle of inclination of

a)         the wheelchair ramp

b)         a set of stairs inside the school

c)         a set of stairs outside the school

PART A : The Ramp

Pick a section of the ramp. Measure the vertical (y)

and horizontal (x) distances between the ends of the

section to the nearest mm. Repeat for two other sections. Enter the data in the table and calculate the average angle of inclination correct to 1 decimal place.

 x (mm) y (mm) tangent (y/x) angle ( º ) average angle of inclination

PART B :       The Inside Stairs

Pick an inside staircase. At three different steps, measure

the vertical (y) and horizontal (x) lengths correct to the

nearest mm. Record the results in the table below and calculate

the average angle of inclination at A, correct to 1 decimal.

 x (mm) y (mm) tangent (y/x) angle ( º ) average angle of inclination

PART C : The Outside Stairs

Please use the stairs at the front of the school .The measurements are done as you did the inside stairs.

 x (mm) y (mm) tangent (y/x) angle ( º ) average angle of inclination