Trigonometric Equations - Hard

[MilitaryMan006]

not very hard

[hellomikkii]

I LOVE YOUUUU

[Matthew2400]

Just to clarify things for everyone:

sin(pi/4) = 1 / sqrt(2) and sin(pi/4) = sqrt(2) / 2

That is because 1 / sqrt(2) = sqrt(2) / 2

It is the same number, it has merely had the denominator rationalised.

[LookBehindUandSeeMe]

Trigo rocks!!!!

[KaBoomPsycho]

this isnt hard :/ its grade 10 stuff

[walzzy77]

@KaBoomPsycho Cool story bro, who do you think you are

[KaBoomPsycho]

@walzzy77 a guy who just graduated highschool with perfect grades :)

[ayceod]

get a new mic....

[MetallicDoom16]

Gahhh!!!!

Just rip the paper and be done with it!!!!!

[jesusnthedaisychain]

You don't have to change the range if you remember to change x back into 2theta - pi/4 before you finish solving. That's a hell of a lot easier to do than resetting your range boundaries.

[Spoodily]

This was way more difficult than it needed to be. The method to finding a solution was hard, not the problem.

[Tacos209]

My head hurts O_o

[al8cheese]

anyone please, i have a test tomorrow and can't figure out how to do this: btw its all in degrees i havent covered radians at school yet:

cos (x - 20 degrees) = -0.437

for the range 0 to 360 degrees, thanks

[clownfeet246]

Thank you so much! After years of futile attempts to grasp this ghastly concept, I have now mastered TRIG. WOOOOOOOOOOHOOOOOOOOOOOOOOOOOO­OOOOO

[61n9ne]

isn't sin(pi/4)=sqrt(2)/2 ... from the unit circle? how come there are two solutions for sin(pi/4) ?

thanks

[dcollis2]

Yes, sin(pi/4)=sqrt(2)/2 - that's true.

There aren't two solutions to sin(pi/4). There is only one. Check, and you'll see i never say otherwise.

There are, however, two solutions to sin(x)=sqrt(2)/2 - and they are pi/4 and 3pi/4.

Good luck with it all!

[fzshinobi]

Thanks again.

[cha5462]

thank you sir.. it was really helpful...

[aksh25]

GOOOOODddddddd

Helpfull for me

[Ktrochee]

You are an excellent teacher, I greatly appreciate you for making these videos!

[MatteNoob]

Thank you for this video, Sir. I hope you continue making these educational videos and post them to youtube so people around the globe can benefit from your knowledge :] Greetings from Norway.

[mexicangamer7]

...Some people around the globe don't know english lolz