This ppt has explanation of Trigonometric Definition, Diagrammatic Explanation of Trigonometric Table, its uses, Standard identities and MCQs.

1. Name: Monali Shantaram Itkar
Course: B.Ed
Roll No:20 Admis
No:30

2. Trigonometry (from Greek trigōnon "triangle"
+ metron "measure") is a branch
of mathematics that studies triangles and the
relationships between the lengths of their sides
and the angles between those sides.

3. In below Right angle triangle,
Side AB is represented by c,
Side BC is represented by a,
Side AC is represented by b.

4. As per the previous diagram, trigonometric
formulae are as below;

5.  The reciprocals of these functions are named the
cosecant (csc or cosec), secant (sec), and
cotangent (cot), respectively:

6. Trigonometric TableTrigonometric Table

7.  A common use of mnemonics is to remember facts and
relationships in trigonometry. For example, the sine,
cosine, and tangent ratios in a right triangle can be
remembered by representing them as strings of letters.
For instance, a mnemonic is a way to remember the
letters is to sound them out phonetically (i.e., SOH-
CAH-TOA, which is pronounced 'so-kə-tow'-uh').
 nic for English speakers is SOH-CAH-TOA:
 Sine = Opposite ÷ Hypotenuse
 Cosine = Adjacent ÷ Hypotenuse
 Tangent = Opposite ÷ Adjacent

8.  There are an enormous number of uses of
trigonometry and trigonometric functions.
 For instance, the technique of triangulation is used in
astronomy to measure the distance to nearby stars
 In geography to measure distances between
landmarks, and in satellite navigation systems.
 The sine and cosine functions are fundamental to the
theory of periodic functions such as those that
describe sound and light waves.

9. music theory audio synthesis acoustics optics
financial markets electronics probability statistics
biology medical imaging pharmacy chemistry
seismology meteorology oceanography And many more

10.  Identities are those equations that hold true for
any value.

12.  What is definition of Trigonometry?
 Which angles are used to define Trigonometric
functions?
 Uses of Trigonometry?

14.  William Bragg Ewald (2008). From Kant to Hilbert: a
source book in the foundations of mathematics. Oxford
University Press US. p. 93. ISBN 0-19-850535-3
 Kelly Dempski (2002). Focus on Curves and Surfaces.
p. 29. ISBN 1-59200-007-X
 Weisstein, Eric W., "SOHCAHTOA", MathWorld.
 A sentence more appropriate for high schools is "Some
old horse came a'hopping through our alley". Foster,
Jonathan K. (2008). Memory: A Very Short Introduction.
Oxford. p. 128. ISBN 0-19-280675-0.