Question

(cos(theta)+1/square root of 2 )(cos(theta)+1/square root of 2 )=0

Answer 1

solve for \( \theta\) ??

Answer 2

yeah :)

Answer 3

\[(\cos \theta+1/\sqrt{2})(\cos \theta+1/\sqrt{2})=0\]

Answer 4

\[\cos(\theta) = \pm \frac{1}{\sqrt{2}}\]


then \[\theta = 45, 135, 225, 315\]

Answer 5

ohh.. that's all ?

Answer 6

either, \( \cos \theta + 1/\sqrt2 = 0\) or \( \cos \theta + 1/\sqrt2 = 0\)
\( \cos \theta + \cos (2n\pi + \pi/4) = 0\)