Answer:
Heyya little student!
Sin means [tex]\frac{opposite }{hypotenuse}[/tex]
5 is the hypotenuse (its opposite to 90 degrees )
So, sin β would be:-
the side opposite to the angle β divided by the hypotenuse of the triangle.
The side opposite to β is 4
and as I said earlier, the hypotenuse is 5
So, sin β would be:-
[tex]\frac{4}{5}[/tex]
I hope it helped you!
Keep learning
and never stop smiling
You Are Awesome!
