Trigonometry : Easy !
Choose the right answer using basic principal of trigonometry.
Your answers must match the highlighted question.


 1  sin 2A = ...
 A:
 (sin A + cos A)^2
 B:
 (sin A  cos A)^2

 cos A / sin A = ..
 A:
 tan A
 B:
 cot A

 [1cos A] / sin A = ...
 A:
 tan (A/4)
 B:
 tan (A/2)

 2 sin A cos A = ...
 A:
 sin 2A
 B:
 cos 2A

 1+ (tan A)^2 = ...
 A:
 (sec A)^2
 B:
 (csc A)^2

 1 (sin A)^2 = ...
 A:
 cos 2A
 B:
 (cos A)^2

 1 2 [(sin A)^2] = ...
 A:
 sin 2A
 B:
 cos 2A

 sin (90+A) = ...
 A:
 cos A
 B:
 cos A

Quiz created by Reinhard