Question

B725с24АFind sin(a) in the triangle.

Answer 1

The sine of an angle on a right triangle is the ratio of the side opposite to that angle divided by the hypotenuse of the triangle.

The side opposite to alpha, is BC, while the hypotenuse is BA. Then:

`\sin (\alpha)=(BC)/(BA)`

Substitute the values of BC and BA to find the sine of alpha:

`\sin (\alpha)=(7)/(25)`