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If sinA =4/5 , find the …

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If sinA =4/5 , find the value of cos2A.
  • 1 answers

Madhav Garg 7 years, 6 months ago

Cos2A=1-sin^2A, =1-(4/5)^2, =1-16/25 =25-16/25 =9/25
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