How to solve for t?

Question

25 = 4 + (155 sin 18)t - (1/2)(32)t^2

Answer 1

Because you have sin 18 in the equation and it is an irrational number, the only thing you can do is approximate it.

Then you can reorganize the equation and simplify to

at^2 + bt + c = 0

Then use the quadratic formula. Realize, 155 sin 18 is a constant.

Answer 2

It's a quadratic.
Use the quadratic formula.
(-B +/- (B*B - 4*A*C)^0.5)/(2*A)