AQA A-level Maths Trigonometric Identities
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Prove 2sin²(x) − 2 = −2cos²(x).
Find the value of tanx, given that cosx = −0.7 and x is in the 2nd quadrant. Give your answer correct to two decimal places.
What is cosx/sinx equal to?
cosx = 1/3 and tanx = 2/5, what does sinx equal?
Solve 2sinx = cosx for 0 < x < 90.
We can use both Pythagorean identities to solve algebra and geometry problems.
Simplify the equation shown.
Simplify cosx + sinxtanx.
Simplify (cosx/sinx)((1 − cos²x)/(1 − sin²x)).