Question

# It 2 tan d=3 tanſ , prove that
tan 1-B) = sin 2B
5-cosaß.


# If a tan 2=3 & ton ß , then prove that.
tan (at B) 5 sin 2ß
5 cos 2B-1.


Use multiple angle formula. ​

Answer 1

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Answer 2

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