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[" (A) "tan90^(@)quad " (B) "1],[" (iii)...

[" (A) "tan90^(@)quad " (B) "1],[" (iii) "sin2A=2sin A" is true when "A=],[qquad [" (A) "0^(@)," (B) "30^(@)," (C) "45^(@)]]

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