Question

Verify the identity.
(1 + tan2u)(1 - sin2u) = 1

Answer 1

is this correctly done
sec^2u • cos^2 u = 1/cos^2u• cos^2u

Answer 2

\[\frac{1+tan^2u}{1-sin^2u}= 1?\]

Answer 3

No (1 + tan^2u)(1 - sin^2u) = 1

Answer 4

ok, if so, yours is correct

Answer 5

ok thanks

Answer 6

yw