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[" Question 4: "],[" If "A=30^(@)," then...

[" Question 4: "],[" If "A=30^(@)," then "sin2A=]

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If A=30^@ , then sin2A equals

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If a=sin30^(@) and b=sin30^(@), then

If A=30^(@) , show that : (1-cos2A)/(sin2A)=tanA

Given that sin30^(@)=1//2 and cos 30^(@)=sqrt3//2 . Determine the values of sin 60^(@), sin 120^(@), sin 240^(@), sin 300^(@) , and sin (-30^(@)) .

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If A=30^(@) , show that : sin3A=4sinAsin(60^(@)-A)sin(60^(@)+A)