See what we can offer to your school
"SimpleStudy just makes sense...”
Get the best plan for your school
10 questions from this quiz
sin 2θ = 2 sin θ cos θ
cos 2θ = 2 cos² θ - 1
tan 2θ = 2 tan θ / (1 - tan² θ)
Complex trigonometric expressions
Using angle addition
cos² θ - sin² θ
Use the double angle formula
√6/4 + √2/4
x = 30° or 60°
tan(2x) = 2tan(x)/(1-tan²(x))
Select your subjects, and get access to A+ resources today.