Prove this and I will mark you brainliest – InterviewSolution

1.

Prove this and I will mark you brainliest

Answer»

Step-by-step explanation:sin(3*30)=3SIN(30)-4sin^3(30)

sin(90)=3sin(30)-4sin^3(30)

1=3*1/2-4*(1/2)^3

1=3/2-4/8

1=3/2-1/2

1=3-1/2

1=2/2

1=1

Hence verified

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