Question

find the value of k

Answer 1

[tex]2 e^{25cosk} - 1 = 7 \\ 2 e^{25cosk} = 8 \\ e^{25cosk} = 4 \\ 25 cos k = ln 4 \\ cos k = (ln4)/25 \\ [/tex]

Answer 2

Hope it helps you and see it