Question

sin A=15/7 and sin B=3/5. what is the value of cos C?

Answer 1

Not enough information.

Answer 2

the information just like that. in triangle ABC known sin A=15/7 and sin B=3/5

Answer 3

Well now, that is a whole different thing. We now know that the angles are in the same triangle.

Answer 4

And also, something else is wrong. The sin of an angle cannot be greater than 1 so sin A=15/7 is a non starter.

Answer 5

i know, it using comparation. there are 3 different triangle. thanks for reply :)

Answer 6

lol what the hell. First there's one triangle, now there's three?

Just post the entire question, word for word, diagrams included if there are any.