trig: find distance moved in raising to 30' along 9-deg ramp

Gary B

New member
Joined
Jan 17, 2009
Messages
2
The problem is something like this: Solid stone blocks weigh over 99,00 pounds each must be lifted by 550 people. They pulled the stone up a ramp inclined at a 9 degree angle. Approximate the distance that a stone was moved in order to raise it to a height of 30 feet.
I don't know at all what to do since the angle isn't 30, 45, 60 or 90 degrees. Any help with the whole problem would be appreciated. Thank you. Gary B
 
Re: trig

Did you draw a sketch of the situation? It seems to me that you have a right triangle with base angles of 90° and 9° and a short leg of 30 ft. Find the length of the hypotenuse.
 
Re: trig

Use a trig ratio. Opposite leg to hypotenuse is the sine ratio. Adjacent leg to hypotenuse is the cosine ratio.
Look at your sketch. Which leg do you have?
 
Top