Double angle formulae (HSC SSCE Mathematics Extension 1): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the sine double angle formula?
What is the sine double angle formula?
sin 2θ = 2 sin θ cos θ
Which is a cosine double angle formula?
Which is a cosine double angle formula?
cos 2θ = 2 cos² θ - 1
What is the tangent double angle formula?
What is the tangent double angle formula?
tan 2θ = 2 tan θ / (1 - tan² θ)
What does the double angle formulas help with?
What does the double angle formulas help with?
Complex trigonometric expressions
How is sin 2θ derived?
How is sin 2θ derived?
Using angle addition
What is cos 2θ equal to?
What is cos 2θ equal to?
cos² θ - sin² θ
What is the first step to solve cos 2x = 0.5?
What is the first step to solve cos 2x = 0.5?
Use the double angle formula
What is the value of sin 75°?
What is the value of sin 75°?
√6/4 + √2/4
What is the result of sin 2x = √3/2?
What is the result of sin 2x = √3/2?
x = 30° or 60°
What is the identity for tan(2x)?
What is the identity for tan(2x)?
tan(2x) = 2tan(x)/(1-tan²(x))