Trig functions

Forums: Math, Homework
Email this Topic • Print this Page

Given cos (-3/8) and tan theta < 0 find the values of the secant and tangent

Topic Stats
Top Replies
Link to this Topic

Type: Question • Score: 0 • Views: 920 • Replies: 2

No top replies

@audal,

Cos = Adjacent/Hypotenuse =-3/8
Use Pythagoras to get Opposite hence other trig ratios.
e.g. Tan=Opp/Adj

0 Replies

@audal,

The example on wikipedia uses a 3,4,5 triangle.

Notice that the angle is more than 90 degrees, and that the terminal side of the angle lies in the second quadrant. This will influence the signs of the trigonometric functions.

$http://upload.wikimedia.org/math/3/2/6/32667723d4c10f957f8e6df28af17d9b.png$
$http://upload.wikimedia.org/math/a/b/4/ab406560e178e74ff727d1e03fb57fa8.png$
$http://upload.wikimedia.org/math/1/f/4/1f463727cabe4686fdb531e366a87319.png$

http://en.wikibooks.org/wiki/High_School_Trigonometry/Defining_Trigonometric_Functions

0 Replies

Trig functions

Related Topics

Quick Links

My Account

able2know