The design for a stage is shown below. The walking ramp, PS, is 12 inches in length. What is the length of the side RP of the stage?

Question

The design for a stage is shown below. The walking ramp, PS, is 12 inches in length.  What is the length of the side RP of the stage?

anonymous · Answer

attachment

anonymous · Answer

sin(60) = 12/x => x= 12/sin(60)

anonymous · Answer

You can use trigonometry for this.
sin(60) = PS / RP
PS is given as 12 in
so RP  = 12 / sin(60) = 13.9 in

anonymous · Answer

Don't bother with sin, cos and tan for this stuff, it's a waste of time...just look up the relationships for special triangles. search 30-60-90 and 45-45-90...

anonymous · Answer

i concur above

anonymous · Answer

i believe trigo is a very important part of maths

anonymous · Answer

Nah, cause they aren't always gonna give you those angles so you needa know how to use sin/cos/tan etc