Question

If theta is the inclination of line joining the points A= (0,1) , B= (2,-3) then ain theta + cos theta
1) 3÷√5
2) -3÷√5
3)1÷√5
4)-1÷√5

Answer 1

slope of line AB= tan theta=-4/2=-2

therefore sin theta=-2/sqrt(5)
cos theta=1/sqrt(5)

sin theta + cos theta = -1/sqrt(5)