What is sqrt(x+15)cos(x+4pi) ?

The solution to sqrt(x+15)cos(x+4pi) is cos(x)sqrt(x+15)

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simplify sqrt(x+15)cos(x+4pi)

simplify

x + 15 cos (x + 4 π)

cos (x) x + 15

Solution steps

x + 15 cos (x + 4 π)

Rewrite using trig identities

= x + 15 cos (x)

sin (\frac{10 π}{2} + θ)

sin (θ - 27 0^{\circ})

sin (18 0^{\circ} + A)

(9 \cdot tan (θ))^{2} + 81

sin (- x^{2})

What is sqrt(x+15)cos(x+4pi) ?
The solution to sqrt(x+15)cos(x+4pi) is cos(x)sqrt(x+15)