Question

4sin30°+5cos60°= ....................................

Answer 1

4*1/2+5*1/2=2+2,5=4,5

Answer 2

To calculate the value of $4\sin(30^\circ) + 5\cos(60^\circ)$, we can use trigonometric identities and values:

1. $\sin(30^\circ) = \frac{1}{2}$
2. $\cos(60^\circ) = \frac{1}{2}$

Now, we can substitute these values into the expression:

$4\sin(30^\circ) + 5\cos(60^\circ) = 4 \cdot \frac{1}{2} + 5 \cdot \frac{1}{2} = 2 + \frac{5}{2} = \frac{9}{2}.$

So, $4\sin(30^\circ) + 5\cos(60^\circ) = \frac{9}{2}.$