If A=30^(@)`, then show that :
`sin3A=3sinA-4sin^(3)A`

sin3A=3sin A-4sin^(3)A

If A=30^(@) , then prove that : sin3A=3sinA-4sin^(3)A

If 2sinA-1 = 0 then show that sin3A = 3 sinA -4sin^3A .

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

Prove that sin3A=3sinA-4sin^3 A

If A=30^(@) , show that : (sinA-cosA)^(2)=1-sin2A

if 2 sin A - 1 = 0, show that : sin 3 A = 3 sin A - 4 sin^(3) A

If A=30^(@) , show that : (cos^(3)A-cos3A)/(cosA)+(sin^(3)A+sin3A)/(sinA)=3

If A= 30^@ verify that :- sin3A=3sinA- 4sin^3 A .

If A = 30^(@) , show that : (i) (1 + sin 2A + cos 2A)/(sin A + cos A) = 2 cos A (ii) (cos^(3)A - cos 3A)/(cos A) + (sin^(3)A + sin 3A)/(sin A) = 3