# Precal

posted by
**Tri**
.

what is your answer for 8sin^2theta + sintheta -1 ?

and how would you do it ? thanks

You have not written an equation. There is nothing to "solve". Did you leave out an " = 0 " ?

Yeah sorry

Yeah sorry

Let x = sin theta

8x^2 +x -1 = 0

x = [-1 +/- sqrt(33)]/16

= 0.296535 or -0.421535

theta = 17.250 degrees or -24.931 degrees

pork?