We can approach this in another way.
We know that sin(∅) = height / hypotenuse.
Thus, for x, height is 1 and hypotenuse is 3. Using Pythagoras theorem,
3² = 1² + b²
b = √8
cos(x) = b/hypotenuse
cos(x) = √8 / 3
Now, lets consider y:
sec(y) = 1 / cos(y) = 1 / base / hypotenuse = hypotenuse / base
The hypotenuse is 25 and the base is 24. We again apply Pythagoras theorem to find the third side, which works out to be:
height = 7
sin(y) = height / hypotenuse
sin(y) = 7/25
Now, sin(x + y) =
sin(x)cos(y) + sin(y)cos(x)
= (1/3)(24/25) + (√8 / 3)(7/25)
= 8/25 + 7√8/75
= (24 + 14√2) / 75
Answer:
B
Explanation:
The total amount of mechanical energy in a closed system without friction or air resistance remains constant. In other words, in the absence of friction potential energy can become kinetic energy. This would mean that if you were to apply friction then the kinetic energy would be reduced. In simpler words, friction reduces the motion of an object.
For example, a skateboarder going down a dry ramp would have less friction stopping them than a skateboarder going down a muddy ramp.
<span>Objects in space that emit light: Sun, Stars, Galaxies, Nebulae, and Meteors in the Earth's atmosphere. is this what your looking for????</span>