Find sena and cosa

12seca-5coseca=0

knowing that π< a< 3/2π

Pls an ice cream shop sells 5 times as many cake cones as waffle cones use variable x to represent the number of waffle the ice cream shop sells and use this variable to write an expression for the number of cake cones the ice cream shop sells. enter the expression for the number of cake cones the ice cream shop sells

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4