यदि `A = 30^(@) ` तो दिखाइए कि :
` sin 3A = 3 sin A - 4 sin^(3) A`

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

sin4A=4cos^(3)A sin A-4sin^(3)A cos A

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

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

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

Prove that: sin3x=3sinx-4sin^3x

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

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

sin4A = 4sin A cos ^ (3) A-4cos A sin ^ (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