Question

17) HELP I have the answer I just need to show the work

Which trig ratio or formula should you use to find “c”?

Answer: B

Don’t give me the answer I already know it just show the work pls

Answer 1

b) cos25

c = 7.248 or 7.2

Explanation:

Cosine =
`(adjacent)/(hypothenuse)`

Cos 25 =
`(8)/(c)`

Cos of 25 is 0.906

0.906 =
`(8)/(c)`

Multiply 8 on both sides:

0.906 x 8 =
`(8)/(c)` x 8

7.248 = c

Answer 2

Here

cos25°=BC/AB=8/c

c=8/cos25°

so cos function is helpful here

really a dum.beannie