Question

If Q= 30° then verify that sin 30°= 3 sin Q - 4 sin³ Q
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Answer 1

Step-by-step explanation:

here is your answer

taking LHS to verify

3 sin30°- 4sin³30° ➝1

we know that sin30°=1/2

substituting the value in 1 we get

3[1/2] - 4[1/2]³

3/2 - 4[1³/2³]

3/2 - 4[1/8]

3/2 - [4/8]

3/2 - 1/2=1

Answer 2

Answer:

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