Let us consider the situation when axes are inclined at an angle ' '. If coordinates of a point are , then , where is parallel to axis and is parallel axis. straight line through that makes an angle with axis is
From , we have Written in the form of where Therefore, if slope of the line is , then angle of inclination of the line with axis is given by 


The axes being inclined at an angle of , the inclination of the straight line with axis is 


a) 
b) 
c) 
d) 
Let us consider the situation when axes are inclined at an angle ' '. If coordinates of a point are , then , where is parallel to axis and is parallel axis. straight line through that makes an angle with axis is
From , we have Written in the form of where Therefore, if slope of the line is , then angle of inclination of the line with axis is given by 


The axes being inclined at an angle of , the inclination of the straight line with axis is 


a) 
b) 
c) 
d) 