Help with trig hw? Please help.

Can someone help me with these problems please? Even if you can't do all of them, please help me with atleast one(:

The sides of a triangle are a=4 b=6 c=10. Find the angle measures of the triangle.

In triangle abc the measure of angle a is 13 degrees and the measure of angle b is 133 degrees. The length of side b is 9. Solve the triangle.

A ferris wheel has a radius of 10 meters and the bottom of the wheel passes one meter above the group. The rider starts at the bottom of the ferris wheel and it takes her 10 seconds to get to the top. Find an equation that gives the height above the group of theriser on the ferris wheel as a function of time.

1. For the first one, the triangle can't exist. Side a and b add up to the same as side c, so it would be flat. So, I guess two of the angles would be zero and the other would be 180, but that's not really a triangle, it's a line segment. If you don't see why this would be so, then try taking two objects that are the same length (like two toothpicks), and break one of them. Try to make a triangle from the whole toothpick and the broken one. It doesn't work, because two of the sides add up to the same length as the third side.

2. It's easy to find angle c, since the angles must add up to 180, so:

Angle c = 180 - (13 + 133) = 34

Use the law of sines to solve for the sides you don't have:

a/sin(A) = b/sin(B) = c/sin(C)

where a, b, and c are the sides and A, B, and C are the angles. Remember that A is the angle opposite the side a, etc. So, using this we get:

a/sin(13) = 9/sin(133)

a = (9/sin(133)) * sin(13) ≈ 2.77

c/sin(34) = 9/sin(133)

c = (9/sin(133)) * sin(34) ≈ 6.88

3. height = 10*sin(18t-90) + 11

height is in meters, the angles are in degrees, and the time (t) is in seconds.

Start with this basic equation for the movement around a circle in the y-direction: