Are you showing that they are identities ?
if so,
LS = (sin^2t/cos^2t)(cost)
= sin^2t/cost
RS = 1/cost - cost
= (1 - cos^2t)/cost
= sin^2t/cost
= LS
The second one works the same way, try it.
tan^2t/sect=sect-cost
cott^2/csct=csct-sint
1 answer