2sin²A-cos²A=2 find A
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7
heya here is ur answer
sin²A+cos²A=1
sin²A=1-cos²A
substitute
2(1-cos²A)-cos²A=2
2-3cos²A=2
cos²A=0
A=90° or an integral multiple of 90°.
hope it helps.
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thats ur answer .please MARK IT AS BRAINLIEST.
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