can someone help in prove the identity:
is equal to tan2 θ2sin2 θ1+cos2
in english 2sin sqaured theta divided by 1 + cos2 eqauls to tan squared theta
any help by great
We can also express the right-hand side in terms of sine and cosine...
is common to both sides, so divide both sides by
Divide both sides by 2.
Now you only need determine if the denominators are equal...