Puzzled by trig. equation

[Cloe]

i no i should be trying to factorize this equation but not getting anywhere.

4sinθcosθ - 2sinθ - 2cosθ+1 = 0

Plz help me :confused:

[DaveD]

4sinθcosθ - 2sinθ - 2cosθ+1 = 0
.. 2sinθ(2cosθ - 1) - 1(2cosθ-1) = 0
.. (2cosθ - 1)(2sinθ-1) = 0
.. 2cosθ = 1 or 2sinθ = 1
.. cosθ = 0.5 or sinθ = 0.5

solve from here