Ex 12.2 Q7 | Area related to circles | Chapter 12 | Class 10 Maths | NCERT

In this session I will be starting with Exercise 12.2 Q7 of chapter "Area related to circles".

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#class10maths #arearelatedtothecircles #learnwithmansi

[ranichopra]

Calculator gives direct solution, and when we solve it by ourselves, the answer came is maximum times is different than the caculator's one

[Adityasirwani]

Don't use calculator zyada se zyada 10 min or ka video or extend hoga hme problem nhi hai

[komalpreetkaur]

We can also use area of isosceles triangle which is ½×r²×sin theta and the value of
theta will be root 3 by 2 ..

[Stuti_Sharma_.....]

Mam why do we use sin 30° not sin 60° as the angle formed between AOC at angle O

[Sparsh__]

Mam please do calculation because we come here to see the calculation in which we do mistakes and to understand how to calculate so please mam please calculate ❤

[kaushalyagarhwal]

calculator mat use kro yrrrr mam kitni baar bolen

[Priyanka-wihe]

Hey mam I love your teaching but this method is quite complicated, I would personally take the value of area of triangle as √3/4 because the angle is 120° .
This will make the sum very easy and it will take you 2-3 minutes to solve this .

(O/360 x Πr² ) - (√3/4 x r²)
=(120/360 x 3.14 x 144) - (√3/4 x 144)
=150.72 - (36√3)
=150.72 - (36 x 1.73)
=150.72 - 62.28
=88.44 cm²

[megotnochill]

Answer 88.44 time taken to solve this problen 8.44

[vivamohnani]

2:11 here, median doesn't make 90 degree angle it just divides in 2 equal parts i.e. it forms mid point,
perpendicular bisector divides the line in 2 equal parts and forms a right angle

[harishnabi]

Mam if you constructed a bisector the angle 120 will split into 60 and 60 then how u put that second angle equal to 90 OR if u drawn perpendicular how will the 1st angle be 60?
You should have made the 2 triangles congurent!

[vandananirankari]

Pandit badri prasad
Har har bole...💙

[gameryt-sznt]

Mam kya hum angle A ki jageh angle O nahi use kar sakte the kya?

[subhashsharma]

Mam but the radius is given here so why we should do the

[binduyadav]

Guys u can just use the formula
" r²× sin/2 × cos/2 " for when the angle is 120

[Karuna]

Mam please upload ch. 9 this is a request to you we need it! 🙏🏻

[gangabai-vhld]

Mam we cant use calculators in exam hall so u can show us the working np

[anvikawagde]

mam but ar. of triangle(root 3/4a^2) ka formula lagake bhi same answer aaya 62.28

[MK.Gaming]

use a simple formula for finding area of triangle which have tita more than 90* use sintita/2 * costita/2 *r2

[btsforever]

Ma'am sin 30° kyu liya OC perpendicular aur OA hypotenuse ke beech me toh 60° angle haina

[BigFacts]

Mam I have one doubt🤔
Here 120 degree is given and after forming 2 triangles how can we say that those angles will be 60 degree each?? Like for this we have to show that those two triangles are congruent and then we can write that they are 60.
Please correct me if I'm wrong