CAST Rule of Trigonometry

CAST Rule of Trigonometry -- CAST rule of trigonometry is very important to know before beginning to learn trigonometry. CAST rule of trigonometry helps us to determine the sign of trigonometric ratios in different quadrants. There are four quadrants and in every quadrant we have different sign of the trigonometric ratios. To learn CAST Rule we have to start from 4th Quadrant --
4th Quadrant -- C ( Cos & Sec Positive) rest of the trigonometric ratios negative.
1st Quadrant -- A ( All positive) rest of the trigonometric ratios negative.
2nd Quadrant -- S ( Sine & Cosec Positive) rest of the trigonometric ratios negative.
3rd Quadrant -- T (Tangent & Cotangent Positive) rest of the trigonometric ratios negative.
And, CAST rule of trigonometry has very wide application, every time, everywhere in any section of trigonometry we have to use the sign of trigonometric ratios.

[riyannoaman]

Legend, taught a whole lesson in 8 minutes. Thank you

[debasissahu]

This is the first video that I watched of its my academy.
I really really really loved the way you taught. Really helpful. ☆☆☆☆☆☆☆☆☆☆

[saymashallahhh]

I found a mistake mate.

Sec 195° Is Negative. .. you wrote positive. Kindly check!

[veronicaprecioso]

OMG!!! I was soooo lost in class today till I saw your video!!! thank you thank you thank you thank you!!!!

[brooke]

Ah! Thank you! I wish my teacher had just taught me this from the beginning.

[WorkofAmbience]

Thanks man, I seriously needed this! Although I'm only doing Additional Maths so I don't know the "sec" stuff, I really appreciate this!! :D

[marvincepulido]

One mistake! sec of 195 degress is a negative value when he said "again its positive value" it should have been negative value...

thats all but despite of that everything was helpful

[BigVerb]

So what is Sec, Cosec and Cotangent?.... and please don't say 7

[sponkhatri]

Sec 195 = + ve???? How? I think this value is negative because sec is in IV

[prabhivadhikary]

So is tan180 degrees positive or negative? It's on the borderline of 2nd and 3rd quadrent

[gdeka]

pls check the video from 5:50...u did a mistake ...i.e...u told the value of sec 195 to be +ve...pls check on.

[daleboden]

i revised this at 1 in the morning n passed the test the next day

[ogupatrick]

I've really been refreshed with my innate knowledge of the topic

[zyla]

thanks so much cause you have taught in very easy and i am very :)

[mamcmamc]

Sir instead of separating the video u can join all video please it will be helpful for all person for their career as well as for 11 cbse student please sir because u can save one student life

[glossysiro]

this was really helpful, thank you so much!

[hpshiker]

I was taught to start in quadrant one. ASTC = All Students Take Calculus.

[JaxGotGame]

way better than how my teacher taught it

[isamkhader]

Thanks for uploading... It really helped me a lot!

[amitranjan]

please upload a video to convert (1+sinA)to(1-sin(square)) please please!!!!?!????