WE KNOW THAT THE COSINE REPRESENTATION IS THE REPRESENTATION OF THE HORIZONTAL COMPONENTS OF LINE AND SINE IS FOR THE VERTICAL REPRESENTATION OF THE COMPONENTS OF LINE. THUS IF A LINE HAS NO HORIZONTAL COMPONENT THUS ITS VERTICAL THUS ITS ANGEL IS 90 DEGREES THEN WE WILL HAVE ITS COSINE AS 0 i.e. NO HORIZONTAL COMPONENT.
What is sin(780)?
WELL QUESTIONS OF THIS KIND CAN BE SOLVED BY JUST ANALYZING WHAT IS THE NEAREST NUMBER WHICH IS THE MULTIPLE OF 180. HERE WE HAVE IT AS 720 i.e AT 720 DEGREE WE WILL HAVE THE VALUE AS 0. THUS, WE NOW CONSIDER ONLY THE EFFECTIVE ANGLE AS 60 DEGREE i.e. SIN(60)=√3/2 i..e 0 .8660
What is sin(780)?
WELL QUESTIONS OF THIS KIND CAN BE SOLVED BY JUST ANALYZING WHAT IS THE NEAREST NUMBER WHICH IS THE MULTIPLE OF 180. HERE WE HAVE IT AS 720 i.e AT 720 DEGREE WE WILL HAVE THE VALUE AS 0. THUS, WE NOW CONSIDER ONLY THE EFFECTIVE ANGLE AS 60 DEGREE i.e. SIN(60)=√3/2 i..e 0 .8660
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