Wednesday

December 17, 2014

December 17, 2014

Posted by **Kim** on Thursday, November 20, 2008 at 5:05pm.

A 5m stepladder propped against a classroom wall forms an angel of 30 degrees with the wall. Exactly how far is the top of the ladder from the floor? Express your answer in radical form.

This chapter right now that we're doing is related to special angles of trig ratios. How would I write the formula using that?

Anyways, the answer at the back says

5 square root 3

---------------

2

Thanks in advance

- Math - gr.11 -
**Anonymous**, Tuesday, April 23, 2013 at 10:34pmsw

- Math - gr.11 -
**Aaron**, Wednesday, November 20, 2013 at 6:34pmCos 30 = A/H

Cos30 = A/5

*switch A and Cos30*

A=5(Cos30)

A=5sqrt of 3

-------------

2

*Remember, Cos30 is equal to A/H which is sqrt3/5

**Answer this Question**

**Related Questions**

Math - A 5 m stepladder propped against a classroom wall forms an angle of 30 ...

geometry - A ladder is propped against a wall. If the top of the ladder reaches ...

algebra II - can someone please explain how to do this problem: A twelve-foot ...

math trig - a 3.8m ladder rests against a vertical wall and makes an angle of 38...

Math - Trigonometry - A 2m long ladder leaning against a wall makes an angle of ...

pre algebra - tom rests a 32-foot ladder against the wall. the ladder forms a 61...

Maths - A15- foot ladder is leaning against a 30- foot wall. The bottom end of ...

Advanced Physic - An 8.5 m extension ladder of mass 24 kg is propped up against ...

algebra2 - A 10ft ladder placed against the wall forms a 40° angle with the ...

pre-algebra - Angel M and Angel N are supplementary angles. If Angel M is nine ...