Question

Find the exact values of sin A and cos A. Write fractions in lowest terms

Answer 1

Can anybody help me with this?
Thank you!

Answer 2

of "sinA and cosA" or of "the mesure of angles A and B"???

Answer 3

sinA and cosA

Answer 4

\[\sin A = \frac{ CB }{ AB } = \frac{ 8 }{ 10 } = 0.8\]

Answer 5

\[\cos A = \frac{ AC }{ AB } = \frac{ 6 }{ 10 } = 0.6\]

Answer 6

simplified it would be cosA = 4/5 and sinA = 3/5 correct?

Answer 7

sinA 4/5 and cosA 3/5 sorry my mistake

Answer 8

No!It's in correct!

Answer 9

well... These are the multiple choice answers that i hate...
A. sinA = 4/3 ; cosA = 3/4
B. sinA = 5/4 ; cosA = 5/3
C. sinA = 3/5 ; cosA = 4/5
D. sinA = 4/5 ; cosA = 3/5

Answer 10

have*

Answer 11

so I think the multiple choices are incorrect,I'm sure that sinA=0.8 and cosA=0.6

Answer 12

The answer is to be in fraction form. One of the MC answers is equivalent to the decimals you are giving.

Answer 13

Yeah it must be in the lowest fraction term

Answer 14

OK, do you see the answer? Do you understand how to get it?

Answer 15

(You were correct above, I just want to make sure you are convinced of that, and understand WHY. :)

Answer 16

sorry I didn't see MC well and made mistake , D is correct :)

Answer 17

It should be D right? i had that answer the whole time but last time i submitted my work and put D for the answer, it was incorrect....

Answer 18

4/5 = 0.8
and 3/5 = 0.6

Answer 19

Okay, well at least im sure it should be D now.
Thank you to both of you!

Answer 20

Yes, it's D. If it was the same triangle image, then that's a typo on the test's key. For that triangle, and those choices, the answer is D. :)

Answer 21

You know SOHCAHTOA, right?

sin=opp/hyp
cos=adj/hyp
tan=opp/adj

Can't go wrong. :)