Sine and Cosine come from circles

[@nsmnsm3550]

Best sine and cos explanation i have ever seen. Thanks a lot.

[@psykovskee]

most of people don't understand why we need to divide the opposite with the radius to get sine value when the length of radius is not 1

[@psykovskee]

all students need to relearn the trig with this fundamental, not the sohcahtoa which is meaningless

[@suzaneoriordan4366]

I disagree I used Soa cah toa to to 3d plane math which has been very useful to me

[@MaxPicAxe]

That was a great explanation!

[@nadiaparveen355]

Why we use sine cosine combine

[@ian.ambrose]

Mr. Khan you sound different today.

[@SwedDubstep]

What is the name of the program to write ? Its been a while i look for one like this, somebody can help ?

[@eng.algareebsaudi1648]

Good job

[@speededucation686]

I want to make a good concept over sin theta and cosine theta . Here you told us that sine is the function of y and cosine is the function of x . But I don't understand u could you plz explaining for me

[@MaxPicAxe]

For sine, `sin theta = y / hypothenuse` 0:50. For him the hypotenuse is always 1. This is because the hypotenuse is equal to the radius, and the radius is 1 in his case. Therefore, `sin theta = y / 1` or just simply `sin theta = y`. Same applies for cosine in the case that the hypothenuse is always 1. Hope you understand.

[@curtpiazza1688]

🎉😊