What is expand 3*sin(2*((5pi)/6+a)) ?

The solution to expand 3*sin(2*((5pi)/6+a)) is 3(-(sqrt(3))/2 cos(2a)+1/2 sin(2a))

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expand 3sin(2((5pi)/6+a))

expand

3 \cdot sin (2 \cdot (\frac{5 π}{6} + a))

3 (- \frac{3}{2} cos (2 a) + \frac{1}{2} sin (2 a))

Solution steps

3 sin (2 (\frac{5 π}{6} + a))

Expand

2 (\frac{5 π}{6} + a) : \frac{5 π}{3} + 2 a

= 3 sin (2 a + \frac{5 π}{3})

Rewrite using trig identities

= 3 (- \frac{3}{2} cos (2 a) + \frac{1}{2} sin (2 a))

(5, - 2) y (1, - 3)

\frac{2}{5} (\frac{5}{x} + 10 x^{2})

(1 - 5 x)^{2}

\frac{ln ( x ) - 1}{( ln ( x ) ) ^{2}}

2 x y d x + (y^{2} - x^{2}) d y

What is expand 3*sin(2*((5pi)/6+a)) ?
The solution to expand 3*sin(2*((5pi)/6+a)) is 3(-(sqrt(3))/2 cos(2a)+1/2 sin(2a))