3. INTORDUCTION
TRIGONOMETRY IS A BRANCH OF MATHEMATICS WHICH DEALS WITH
TRIANGLES PARTICULARLY RIGHT TRIANGLES
THERE ARE BEHIND HOW SOUND AND LIGHT MOVE AND ARE ALSO
INVOLVED IN OUR PERCEPTIONS OF BEAUTY OF AND OTHER FACETS ON HOW OUR
MIND WORKS
SO TRIGONOMETRY TURNS OUT TO BE FUNDAMENTAL TO PRETTY
MUCH EVERY THING
4. A TRIGONOMETRIC FUNCTION IS ARATIO OF CERTAIN PARTS OF TRIANGLE
THEY ARE => SIN, COS , TAN , COS , SEC , COT.
HAVE A LOOK AT THEM :-
6. USES OF TRIGONOMETRY
ONE OF THE MOST ANCIENT SUBJECTS STUDIED BY
SCHOLARS ALL OVER THE WORLD,ASTRONOMERS
HAVE USED TRIGONOMETRY TO CALCULATE THE
DISTANCE FROM EARTH TO SUN ETC.,IT IS ALSO USED IN
GEOGRAPHY,
THE KNOWLEDGE OF TRIGONOMETRY IS USED IN
CONSTRUCTION OF MAPS ETC.,,
7. BASIC FUNDAMENTALS :-
ANGLE OF ELEVATION
IN THE BELOW PIC , AN OBSERVER IS STANDING AT TOP OF
BUILDING AND IS LOOKING STRAIGHT TO A PLANE.IF WE DRAW
A HORIZONTAL WE GET ANGLE OF ELEVATION
8. ANGLE OF DEPRESSION:-
THE ANGLE WHEN A PERSON WATCHES FROM THE TOF
BUILDING ,PLANE ETC TO THE GROUND IS KNOWN AS
ANGLE OF DEPRESSION
