any chance of help,
on the same paper question 5, i cant seem to do it correctly:
changed tan2a to 2tana / 1-tan^2 a
so have 2tana / 1-tan^2 a tan a = 8
multiply through by (1-tan^2 a)
2tana tana(1-tan^2 a) = 8 (1 - tan^2 a)
2tan a tan a - tan^3 a = 8 - 8tan^2 a
I think ive gone wrong...sorry thats a bit hard to follow, if you can show me how to do it though would be really grateful. you can do it from scratch if what i have done doesnt make sense.
thank you