Question

Please help, precalc test tomorrow! Question is find all solutions on interval 0 less than or equal to theta less than or equal to 2 pi for 2sintheta+sqrt3=0 I'm confused on how to get 2theta.....

Answer 1

Okay. 2sinθ+1 = 0
2sinθ = -1
sinθ = -1/2
sin π/6 = 1/2, so using that as a reference angle in QIII and QIV, we get the solutions

π + π/6 and 2π - π/6

Answer 2

Hope this helped. Have a great day!

Answer 3

its not 2 sin theta, it's sin(2theta)