Find sin 300, cos 765, tan 870 etc in secs | Allied angles | Trigonometric ratios of allied angles

Hi, as a teacher I have often come across students finding it difficult to get the value of ALLIED ANGLES of Trigonometric Ratios; in this video I have explained the easiest way to remember all the allied angle values.

The link to remember ALL the double angle formulas of Trigonometry in secs is:

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[mbchannel]

Thankyou mam. I felt it was so tough.but now it was so easy. Thank you mam.

[niheerdevatraj]

Thank you madam, I thought this was a toughest thing, you made it the converse.. thank you!

[Alkred]

Thank you so, so, SO much. I didn't understand any of my math class and then this was so insanely helpful

[laibashahzadi]

Thank you so much Mam you explained it very well
ALLAH bless you

[srisakethvangala]

Thank u very much i understood very clearly.

[sakthi]

What is the value of cosec (-1410)
-cosec(15*90+60)
n is Odd function
-sec(60)
-2 but n+1 =16, , 4th quadrant
Ans - -2 = +2

Is it right?

[vaishalisathe]

Amazing explanation mam thank you .
HW ans negative root 3 by 2

[KaranPatel-zlzq]

Mam suppose our theta is on negative so what will we do ?

[lavanyaanchan]

Mam what would be the answer for cos (-870)

[immadkhan]

Hello Mam
Please solve
Cos - 350 degree

[imrankhanSouth]

thanks a lot from Bangladesh and also subscribed this channel. ❤️❤️❤️❤️❤️❤️

[sanketkharche]

Thanks mam I was very confused from 10 am now at 6.15 i found it correct thanks l💕💕💕💕

[anthonypulsejr]

cos(690) = (7 * 90 + 60) = sin(60) = 0.8660254037844386 (sqrt(3)/2)

[renukaravi]

Sister answer is square root of 3 divided by 2