Trig: Solving Equations 1

Introduction to solving trigonometric equations.

Category:

Education

Tags:

• trig
• mathtv
• mckeague
• help
• equation

[dlfite10b]

here is a simple way to remember all the reference angles of all the theta

just remember the sin theta

0 degree - o

30 degree - 1/2

45 degree - 1/root of 2

60 degree - root of 3/2

90 degree - 1 The cos of theta will be the opposite of sin theta i.e 0 degree - 1, 30 = root of 3/2, 45 =1/root of 2 ,60 = 1/2 ,90 - 0

now divide sin theta by cos theta and you will get tan theta

i.e= 0/1=0 , 1/2 / root 3 / 2 = 1/root 3, 1/ root 2/ 1/root 2=1, root 3 /2/ 1/2=root3, 1/0=not defined

[0Singularity0]

I used to get this, but then I took an arrow in the knee.

[mohendraamatya]

hey how does cosine go with the variable x????? help pls

[bladeere14]

@poyanator yes we are. economics here

[dragias0013]

Your are awesome man

[Nukefuzion]

@dlfite10b WOW O_O

I thought of this exact way to remember it too :D!

[baderocks2]

@poyanator yeah but each generation will study more difficult things than us.

[poyanator]

@baderocks2 my god.. we should be given so much more credit for even being able to fathom some of this stuff!

[baderocks2]

@poyanator even im in grade 11, and my math teacher told us that the things we are currently doing used to be what the teacher used to study in university.

[phobak]

beautiful!

[poyanator]

are people studying these in Uni???

I'm in grade 11 and I have this as final year exam...