12 / 1 / 12 INVERSE TRIGONOMETRIC FUNCTIONS

IF YOU WANT TO LEARN MORE ABOUT TRIGONOMETRY YOU CAN NOT MISS INVERSE TRIGONOMETRIC FUNCTIONS.
AS YOU SEE, YOU HAVE TO PRACTISE ON WORKING WITH YOUR CALCULATOR.

20 / 12 / 11 SIMPLIFYING TRIGONOMETRIC EXPRESSIONS

 tg²x + 1 = sec²x     tg²x + 1 = sec²x    tg²x + 1 = sec²x   tg²x + 1 = cosec²x    tg²x + 1 = sec²x    tg²x + 1 = sec²x

TRY TO SIMPLIFY A TRIGONOMETRIC EXPRESSION AND, FIND OUT IF YOU ARE RIGHT!

webmath.trigsimp. 

 cotg²x + 1 = cosec²x     cotg²x + 1 = cosec²x    cotg²x + 1 = cosec²x   cotg²x + 1 = cosec²x    cotg²x + 1 = cosec²x

16 / 12 / 11 TRIGONOMETRY WORD PROBLEMS

	A little boy is flying a kite. The string of the kite makes an angle of 30o with the ground. If the height of the kite is h = 15 m, find the length (in meters) of the string that the boy has used.

11 / 11 / 11 A QUESTION TO THINK ABOUT

  sin30=1/2 sin30=1/2 sin30=1/2 sin30=1/2 sin30=1/2 sin30=1/2 sin30=1/2 sin30=1/2 sin30=1/2 sin30=1/2 sin30=1/2

m

If x is a positive angle smaller than 180° and cos(x) = -1/3, then sin(x) =

  A) -2/3             B) 2√2 / 3            C) 8/9             D) -8/9             E) 4/9 

m

cos60=1/2 cos60=1/2 cos60=1/2 cos60=1/2 cos60=1/2 cos60=1/2 cos60=1/2 cos60=1/2 cos60=1/2 cos60=1/2 cos60=1/2

8 / 11 / 11 QUESTION OF THE WEEK

IS IT POSSIBLE THAT sin a>1?
 e

7 / 12 / 11 THE UNIT CIRCLE

Learn how to use the unit circle: 

touchmathematics.trigonometry

mathisfun.com

themathpage.unit-circle 

TFP

Trigonometric Functions Property TFP               Move a in order to get different angle values. Este es un Applet de Java creado con GeoGebra desde www.geogebra.org – Java no parece estar instalado Java en el equipo. Se aconseja dirigirse a www.java.com MJARCE, Creado con GeoGebra

2 / 12 / 11 TRIGONOMETRIC FUNCTIONS

 HERE YOU WILL FIND SOME USEFUL LINKS TO START WITH: 

intmath.com/trigonometric-functions 

intmath.values-trigonometric-functIions 

regentsprep.trigsix. 

2 / 12 / 11 INTRODUCTION TO TRIGONOMETRY