h 5 sin A=3 find sec²A-tan²4
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Answer:
5 sin A = 3
sin A = 3/5
so,
sec A = 5/4
tan A = 3/4
sec²A-tan²A
= (5/4)²-(3/4)²
= 25/16 - 9/16
= 25-9/16
= 16/16
= 1
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