Triangles Definition and 208 Threads

If sin theta = \frac {-4} {7} and \frac {3 pi} {2} < theta < 2 pi then determine the exact value of \frac {1} {cot (theta)} I don't know where to start I know to set up a circle with a cartesian plane but what am I supposed to do? :rolleyes:

I don't have the answers in the back of my book and I really want to know if i did this correctly since its graded. the Problem is: Let the region bounded by x^2+y^2=9 be the base of a solid. Find the Volume if cross sections taken perpendicular to the base are isosceles right triangles. i...

I was wondering if you can find the sides of a right triangle if you only know the angles of the triangle...i couldn't think of a trig ID or any law..if there is, id like to know it, thanks.

help me please

ok, I'm in first year coolege and we're doing some review from high school work.. but i can't for the life of me remember how to do one of these questions and i can't seem to get past this one part or at least figure out how to prove that it is what i think it is. it's going to be a bit...

If a line in a triangle is a median, does it cut the triangle into two congruent triangles?

Sorry to bother you guys.. but if there is someone out there that is good at math and wouldn't mind helping me.. could you aim me sn:"euphoriet" thanks.

I found a neat problem on the web you can look at it http://physics.harvard.edu/undergrad/prob14.pdf I've always had fun with these find the angle problems but my solutions on this one seemed a little bit weird. Anyone want to let me know what they got? Heres what I found angle BCA = 20 and...