The Law of Sines states both Sin A/a= Sin B/b= Sin C/c but also a/Sin A= b/Sin B=c/Sin C How do I know when to use either equation

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?

How do i i solve this equation? -18 = x/3 + 3

Which of the following is true about the following construction of a tangent to a circle from a point outside of the circle?