Question

50sin19(градусов)· cos19(градусов)            sin38(градусов)

Answer 1

(50sin19°*cos19°)/sin38° = (25 sin 38 )/sin 38 = 25

Answer 2

Looks like you're working with some trigonometric functions there! If I'm not mistaken, you're calculating the product of sine and cosine of 19 degrees and the value of sine of 38 degrees. Let me do the math for you:

$50 \sin(19^\circ) \cdot \cos(19^\circ)$

$\sin(38^\circ)$

Let's break it down:

$50 \sin(19^\circ) \cdot \cos(19^\circ) \approx 50 \cdot 0.324 \cdot 0.946$

$\sin(38^\circ) \approx 0.615$

Now, multiply the two results:

$50 \cdot 0.324 \cdot 0.946 \cdot 0.615$

Give me a moment to calculate that for you.