solve this trigonometry
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Sin0 - Cos0 + 1 / Sin0 + Cos0 - 1
Divide both sides by Cos0
Sin0/Cos0 - Cos0/Cos0 + 1/Cos0 /
Sin0/Cos0 + Cos0/Cos0 - 1/cos0
= tan0 + sec0 - 1 / tan0 - sec0 + 1
= tan0 + sec0 - 1 /
tan0 - sec0 + ( sec²0 - tan²0 )
= ( tan0 + sec0 - 1 ) /
( tan0 - sec0 ) + ( sec0 + tan0 )
( sec0 - tan0 )
[ a² - b² = ( a + b ) ( a - b ) ]
= ( tan0 + sec0 - 1 ) /
( sec0 - tan0 )( tan0 + sec0 -1 )
= 1 / sec0 - tan0 = RHS
( Hence proved )
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