Sin(theta)+cos(theta)=0 what is theta? 20 points someone please help (A-Level pure maths)

Question

asked Jun 17, 2020 153k views

1 Answer

Htmn · Answer 1 · 2020-06-24T16:00:18+0000

Answer:

sin(theta) + cos(theta) = 0

sin(theta) = -cos(theta)

sin(theta)/cos(theta) = -1

tan(theta) = -1

theta = - 45° ± k·180°