SOLUTION: Find the exact value of cos(t/2) if {{{ tan(t)=12/5 }}} and {{{ pi<t<3pi/2 }}} a) 2 sqrt(13) /13 b) 3 sqrt(13) /13 c) -3/-2 d) -7 sqrt(13) /-13

Algebra ->  Trigonometry-basics -> SOLUTION: Find the exact value of cos(t/2) if {{{ tan(t)=12/5 }}} and {{{ pi<t<3pi/2 }}} a) 2 sqrt(13) /13 b) 3 sqrt(13) /13 c) -3/-2 d) -7 sqrt(13) /-13       Log On