# how can i solve ( inclination of a line 45 degree )

• May 13th 2009, 12:09 PM
Tebeen Besarani
how can i solve ( inclination of a line 45 degree )
hi guys
pls tell me how can i solve ( inclination of a line 45 degree ) , the question is

if the inclination of a line is 45 degree then what is the slope ?

• May 13th 2009, 12:16 PM
masters
Quote:

Originally Posted by Tebeen Besarani
hi guys
pls tell me how can i solve ( inclination of a line 45 degree ) , the question is

if the inclination of a line is 45 degree then what is the slope ?

Hi Tebeen Besarani,

The slope of the line can be found by finding the tangent of the angle of inclination (the angle made by the line with the x-axis measured in a counterclockwise direction).

So, find tan 45 degrees.
• May 13th 2009, 12:21 PM
Tebeen Besarani
so in that case the tan 45 is 1 , is that mean the answer is 1 for this question ? am i right ?
• May 13th 2009, 12:25 PM
masters
Quote:

Originally Posted by Tebeen Besarani
so in that case the tan 45 is 1 , is that mean the answer is 1 for this question ? am i right ?

You are correct. The slope is 1.
• May 13th 2009, 12:36 PM
Tebeen Besarani
thanx very much
one another questions
Can i find all degree of tan or cos or sin... is that have any website that tell us about all degree ?
• May 13th 2009, 12:41 PM
masters
Quote:

Originally Posted by Tebeen Besarani
thanx very much
one another questions
Can i find all degree of tan or cos or sin... is that have any website that tell us about all degree ?

This is a good site for beginning trigonometry students.

Dave's short course in trigonometry
• May 13th 2009, 12:46 PM
Tebeen Besarani
yes of course its but you know i have to learn all of degree but how ? for example 135 degree how can i know it can you tell me i think just i have to learn by hard all of degree
• May 13th 2009, 01:01 PM
masters
Quote:

Originally Posted by Tebeen Besarani
yes of course its but you know i have to learn all of degree but how ? for example 135 degree how can i know it can you tell me i think just i have to learn by hard all of degree

There are special angles that you should memorize the six trigonometric function of by heart. You can't learn all the degrees. That wouldn't be practical (nor possible). You might also familiarize yourself with the unit circle. But, if you're just starting out, look at the tutorial I suggested.
• May 13th 2009, 01:10 PM
Tebeen Besarani
thx very very much
good job