evaluate cos 19° ÷ sin 71°
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Step-by-step explanation:
Given that :-
cos 19° ÷ sin 71°
=> cos 19°÷sin(90°-19°)
we know that sin(90°-A)= cos A
= cos 19°÷ cos 19°
=>1
cos 19° ÷ sin 71° = 1
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