Class 10 Maths | Chapter 8 | Exercise 8.1 Q10 | Trigonometry | NCERT

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In this session I will be starting with Exercise 8.1 Q10 of chapter "Trigonometry ".

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All the best for tomorrow maths exam 🌸🔥

bakhtawarsingh
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Legends are watching this video one day before exams😅😅

sandhusaab
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Given, PR + QR = 25
So, PR = 25 - QR

Now, Using pythagoras theorem,
PR² = PQ² + QR²
(25-QR)² = (5)² + (QR)²
625 - 50QR + QR² = 25 + QR²
625 - 50QR = 25
-50QR = 25 - 625
-50QR = -600
QR = -600/-50
QR = 12cm

Then, PR = 25 - QR
PR = 25 - 12
PR = 13cm

jeetendramohanty
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Jis jis ko bhi doubt hai ki ma'am ne equation 1 and 2 ko solve krte time sign change kyu nhi kiye... wo khud sign change karke dekhe answer same hi aayega

aleemasaud
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Your teaching is very nice mam thank you

Abhigamerx
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Thanku ☺️ so much for this wonderful explanation mam ....you are the best ❤️..😊

kamalsheokand
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Tq mam for explaining the sum in easy methods
❤❤

jyotikalawad
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literally mam your videos and the way of explaining is amazing ✨✨💯💯 your videos heleped me alot ✨

sachinsharma-hqjz
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Now it's board exam, but can not understand with out your teaching 😭😞

jailanimishrikoti
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Thanku mam for helping us by explaining us mmaths ❤

arpitajamwal
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mam please and please i am requesting you to please start the next chapter of

shoryasingh
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Literally wonderful✨😍✨😍🔥🔥🔥🔥 Thank you❤🌹🌹🌹🙏🙏❤

Mrfunny-pb
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Thank you mam I am study in Hindi medium school but I understand in English because I love math in english 😊

AnilKumar-dmcl
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Maam surface area and volumes and applications of trigonometry plsss

rebeccatresatensy
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thanks mam it help me a lot in my math exam of class 9, mam your explaining is very good by this video i clear my all doubts once again thank you mam

Kuldeep-ccxl
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I wanted to know if in exam we could directly write that.. 5, 12 and 13 are pythagoras triplets and 12+13=25 so hypotenuse will be 13 since its the longest side and so 12 will be the third side

bhavyart_
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Ma'am please upload Quadratic Equations

suhaninandni
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Legends watch this few hour before paper

sonal_vyahut
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What if we switch P and R in the diagram ?
My answer for sin P is coming 13/12?

dumpingground
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Mam please start physics ch 1 and bio ch 1 also

mamtakarnwal