Question

( sin^2 A − 1 ) × cosec^2 ( 90 − A )$( sin^2 A -1 ) × cosec^2 ( 90 - A )$
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Answer 1

Answer:

Step-by-step explanation:

( sin² A - 1 ) × cosec² ( 90 - A )

= cos² A × sec² A

= cos² A × ( 1 / cos² A )

= 1