Question

If 270 less than A less than 360,90 less than B less than 180 cos A =5/13,tan B=-15/8 then sin (A+B)=

Answer 1

Answer:

Step-by-step explanation:

Describe an experiment to determine the percentage of the component of air during rusting

Answer 2

Answer:

sorry i also don't know these points

Step-by-step explanation:

but i need

points