Help with trigonometry homework?

Question

It says I have to write a statement of the trigonometric ratio being described. I don't really understand it. So could someone please help me? It's REALLY appreciated. :)

Also I need an application problem that uses the trigonometric ratio to solve for an unknown side or an unknown angle.

Answer 1

If the description was:
opposite side / adjacent side
That would be a description of the tangent of the angle.
See the pic:

http://s236.photobucket.com/albums/ff177/jsardi56/?action=view¤t=angleofelevation10-25-07.jpg

In the sketch the angle of elevation is the angle we're talking about. The height is the side opposite the angle, and the range is the side adjacent to the angle.
As for an example, we could find the height of a building or a flagpole if we know the range (length of a shadow being cast, say) and we know the angle of elevation. You would write the formula:
tangent(A) = H/R
Rearrange to find H:
H = R x tangent(A)

Unless you give us a specific example, we don't know what trigonometric ratio is being described. Check here for other trig functions:

http://www.math.com/tables/algebra/functions/trig/functions.htm

Answer 2

interior the above word situation, the rectangle has the two factors of 30 and 21 gadgets. The rectangle's corners are being folded jointly, which would be pictured or portrayed visually as the two factors of the rectangle coinciding to produce a million/2 of its section consequently yielding a triangle. bear in mind that a rectangle and parellelogram have an identical section. on condition that that's real, that ought to propose the inverse relationship with triangles because of the fact if those polygons have comparable section, then a million/2 of their section may be equivalent to a triangle consequently, making the folded corners a triangular asset, which concurrently implies the rule of thumb of specific triangles refferred to or talked approximately as ideal triangles. given which you're given 2 factor lengths of the triangle and asked to locate the crease, that could entail some sort of rule defining the relationship between triangular factors with appreciate to the type of triangle, that's in uncomplicated terms the wonderful triangle. hence, the rule of thumb mandatory to locate the crease or supposedly the hypotenuse is the Pythagorean Theorem. J.C