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[" 5.If "sin A sin(60^(@)-A)sin(60^(@)+A...

[" 5.If "sin A sin(60^(@)-A)sin(60^(@)+A)=k sin3A" ,then "],[" what is "h" equal to? "],[[" (a) "1/4," (b) "1/2," (c) "1," (d) "4," 2014"]]

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4sinA.sin(60^(@)+A)sin(60^(@)-A)=sin3A

4sinA.sin(60^(@)+A)sin(60^(@)-A)=sin3A

If sin A sin (60^(@)-A)sin(60^(@)+A)=ksin3A , then what is k equal to ?

If sin A sin (60^@-A)sin(60^@+A)=k sin 3A , then what is k equal to?

Show that 4sinAsin(60^(@)+A).sin(60^(@)-A)=sin3A .

Find m if sinAsin(60^o−A)sin(60^o +A)=1/m sin3A

Prove that: sin A sin(60^(@)-A)sin(60^(@)+A)=(1)/(4)sin3A

Prove that: sinA.sin(60^(@)+A).sin(60^(@)-A)=1/4sin3A

Prove that 4sinAsin(60^@-A)sin(60^@+A)-sin3A=0

Prove that: sinA.sin(60^(@)+A).sin(60^(@)-A)=1/4sinA