Question

X= 30°,find 3sinX-4sin³X​

Answer 1

Answer:

1

Step-by-step explanation:

3sin30°-4sin^3(30°)

3×1/2- 4(1/2)^3

3/2-4(1/8)

3/2-1/2

2/2=1

Answer 2

♛HELLO♛

we know, sin 30° = $\frac{1}{2}$

given x = 30°

so , $3sin(x)-4sin^3(x) = 3sin30 -4sin^330$

= $3(\frac{1}{2})-4(\frac{1}{2})^3$

= $\frac{3}{2} - 4(\frac{1}{8}) = 3/2 - 4/8 = 3/2 - 1/2 = 2/2 = 1$

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