sin*2x=tan*2x/1+tan*2x proof it
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RHS
= tan²x/1+tan²x
= sin²x/cos²x/cos²x+sin²x/cos²x
= sin²/cos²x × cos²x/sin²x+cos²x
= sin²x/ sin²x+cos²x
= sin²x/1
= sin²x
LHS = RHS
= tan²x/1+tan²x
= sin²x/cos²x/cos²x+sin²x/cos²x
= sin²/cos²x × cos²x/sin²x+cos²x
= sin²x/ sin²x+cos²x
= sin²x/1
= sin²x
LHS = RHS
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