for the 2nd one, so far i have:
tan^2x/sec^2x = sin^2x
[(sinx/cosx)^2]/ (1/cos^2x) = sin^2x
that's all, lol
Hi,
I am realllly bad at proving identities... so I would appreciate any advice you have, when proving these three identities:
(4/4a+4) + (7/7a-7) = (2a^2 + 2a/a^2 + 2a + 1) * (a+2)/(a^2+a-2)
also:
tan^2x/sec^2x = sin^2x
also:
(1+tan^2x)(a-sin^2x)=1
thank you for any guidance you have to offer