Respuesta :

Answer

Choose which trig ratio to use. - Choose either sin, cos, or tan by determining which side you know and which side you are looking for.

Substitute. ...

Solve. ...

Step 1: Choose which trig ratio to use. ...

Step 2: Substitute. ...

Step 3: Solve. ...

Step 1: Choose the trig ratio to use. ...

Step 2: Substitute.

Step-by-step explanation:

a) Cos(17)=3/x
b) Sin(25)=x/9