Question

Find m angle T

A) 40.5°

B) 76°

C) 67°

D) 35.4°

Answer 1

picture?

Answer 2

HI!!

Answer 3

hi can you help?

Answer 4

looks to be a law of cosines question right?

Answer 5

\[\cos(A)=\frac{b^2+c^2-a^2}{2bc}\] is how to get the cosine of the angle, then take the arc cosine to get the angle itself

Answer 6

where \(a\) is the side opposite angle \(A\)

Answer 7

you need a calculator, and to plug the numbers in to the right place
need help with that?

Answer 8

yes plz which do i put in where

Answer 9

you want angle T, and the side opposite angle T has length 8.5

Answer 10

so it is
\[\cos(T)=\frac{13^2+11^2-8.5^2}{2\times 11\times 13}\]

Answer 11

put that in the calcualtor, then take the arc cosine of the result

Answer 12

or you can use wolfram

Answer 13

i \(\color\magenta\heartsuit\) wolfram
http://www.wolframalpha.com/input/?i=arccos%28%2811%5E2%2B13%5E2-8.5%5E2%29%2F%282*11*13%29%29

Answer 14

got it?

Answer 15

ok so it would be A?

Answer 16

i guess

Answer 17

40.5 or so

Answer 18

ok thank youu

Answer 19

\[\color\magenta\heartsuit\]