Question

How do you find the exact value of the third side given `triangle RST`, `RS=0.375, ST=1.29, mangleS=167`?

Answer 1

Length of third side `color(brown)(s = 1.65753673796)`

Explanation:

`t = 0.375, r = 1.29, hat S = 167^@`

To find length of side `s`

`s = sqrt(r^2 + t^2 - (2 r t cos S))`

`=> sqrt(1.29^2+ 0.375^2 - (2 * 1.29 * 0.375 cos (167)))`

`color(brown)(s = 1.65753673796)`