... sin² θ - sec² θ + cos² θ + tan² θ
= sin² θ + cos² θ - sec² θ + tan² θ
= ( sin² θ + cos² θ ) - ( sec² θ - tan² θ )
= ( 1 ) - ( 1 )
= 0 .......................................... Ans.
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... sin² θ - sec² θ + cos² θ + tan² θ
= sin² θ + cos² θ - sec² θ + tan² θ
= ( sin² θ + cos² θ ) - ( sec² θ - tan² θ )
= ( 1 ) - ( 1 )
= 0 .......................................... Ans.
_____________________