C3 trig questions Watch
Please could someone explain how do do these?
similarly sinΘ can be written as 2sin(Θ/2)cos(Θ/2)
e) Try the R-fomulas,
f) Try the sum-product formula,
g) Perhaps a disguised quadratic?
Is this A-Level ? , becauase this level of trigonemetry definitely isn't on Edexcel Mathematics and I'm in top set amd have never seen it.
on actual papers.