1-sin/1+sin=(sec -tan) ²
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⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
Prove the identity :
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
★
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
:
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
★
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
:
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
★
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
:
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
:
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
★
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
:
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
★
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
:
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
:
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
: LHS
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
Hence proved!
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