(Problem 1.)

---

The equation for the angle formed by a rhythmically moving object, y, is given below, where t is time (in seconds):

y = (1/6)(sin( ((5)(pi)(t)) / (4) )

# or "(1/6)(sin( (5 times pi times t) divided by (4))

(a) Solve the equation for t.

(b) At what time(s) does the object form an angle of 0.1 radian?

----

So, the first part of the problem that I do not understand is how to solve for t when there are 2 variables. Without knowing how to solve for t, I do not know how to complete the second part of the problem.

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

(Problem 2.)

---

Solve each triangle ABC that exists. Angles in DMS (Degrees Minutes Seconds).

C = 29(DEG)50(MINUTES), a = 8.61, c = 5.21

----

Just some additional info to clear up some possible confusion: The lower case letters 'a' and 'c' represent triangle sides, while upper case 'C' represents the angle C across from side 'c'.

I can get as far as finding that there are 2 triangles (ambiguous case), but I am stuck at that point.

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

Your help would be VERY greatly appreciated, thank you all in advance.