10th Trigonometry maths chapter 8 Class 10 Maths Ex 8.3 Timestamp 00:00 Intro to class 10 ex 8.3 01:03 class 10 ex 8.3 Q1 06:31 class 10 ex 8.3 Q2 16:12 class 10 ex 8.3 Q3(i) 18:26 class 10 ex 8.3 Q3(ii) 27:44 class 10 ex 8.3 Q3(iii) 32:30 class 10 ex 8.3 Q3(iv) 35:36 outro
7:26 Yaha pe galti ye hai ki sin²A+Cos²A=1 hota hai Or jab sin²A chahiye hoga tab ham Sin²A= 1-Cos²A karenge Or sir ne '+' ki jagah '-' likh diya Answer bhi galat hai + ki jagah - ka sign aayega
Sir please can you just check question no. 2 : i) sin A into sec A. Cos square A + sin square A =1 but sin square A = 1 - cos square A. I saw you wrote sin square A = 1+ cos square A , i think it is not correct.
Sir. Ye sum no 2 ka 1 part matlab sin A mein apne sec2 A+ 1 upon mein sec A hai to aage wale cosec A mein to sin A ki value sec2 A- 1 upon mein sec A liya hai
8.1 and 8.2 are kinda easily but 8.3 is hard NGL... U can obviously take the help of internet to practice 8.3 and diagram is so easy to draw tell me what's bothering u
Mistake Q.2 cos²A+sin²A=1
Sin²A=1-cos²A
Right bro.. me bhi yhi soch rha tha
Cos²A=1-Sin²A
Same here
Yess i also noticed that and then checked my notes 😂❤
Yes
Exercise 8.1 🤡
Exercise 8.2 🤡
Exercise 8.3 🗿
Sahi bola bhai fati padi hai meri💀
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10th Trigonometry maths chapter 8
Class 10 Maths Ex 8.3 Timestamp
00:00 Intro to class 10 ex 8.3
01:03 class 10 ex 8.3 Q1
06:31 class 10 ex 8.3 Q2
16:12 class 10 ex 8.3 Q3(i)
18:26 class 10 ex 8.3 Q3(ii)
27:44 class 10 ex 8.3 Q3(iii)
32:30 class 10 ex 8.3 Q3(iv)
35:36 outro
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Sir second question me + nhi aayega 1-cosA होगा
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Sir 7:27 pe cos²A will be in minus when it shifts on the other side right?
right
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Ya right
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7:26
Yaha pe galti ye hai ki sin²A+Cos²A=1 hota hai
Or jab sin²A chahiye hoga tab ham
Sin²A= 1-Cos²A karenge
Or sir ne '+' ki jagah '-' likh diya
Answer bhi galat hai + ki jagah - ka sign aayega
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Sir 2nd ka...sinA=√sec²A+1/secA... Wrong hai.
Right answer...sinA=√sec²A-1/secA
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Ex8.3💀🕊️🕊️🕊️🕊️🕊️🔱🕊️
Sir cos ko udhar transfer karoge toh + nhi - ho jayega 7:32 💀
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Sir There's a minor correction in the answer of question 2, there should be sinA=√sec2A-1/secA
Yess
Yess
real
7:31 sir.. sin²A=1+cos²A wrong.. because if we will transpose..cos²a it will come with negative sign...pardon me if I'm wrong 😊
Correct
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Ye rule nahi he agr 1 ko transfer karte to negative hota ratio transfer karne par negative nahi hoga
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Yes here being mistake by sir
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13:59 sir root sec²A+1/secA hai
sir as u canceled root from tan square at 12:18 so why u didnt cancelled root from sec square
Because sec²-1 is the separate if u want to remove root then u have to sqare in 1
But 1^2 is 1 right? Because 1×1 is 1
Sir please can you just check question no. 2 :
i) sin A into sec A.
Cos square A + sin square A =1 but sin square A = 1 - cos square A.
I saw you wrote sin square A = 1+ cos square A , i think it is not correct.
Thank you sir for your videos it helps us to revsie at exam time ❤
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7:53
sin²A=1-cos²A
Ok 😊
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7:29 sir apna vha pa sign chnge nhi ki jb apna cos ka sq ko transpose kiya
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Thanku so much sir solution ka liye😊😊
Question no. 2
Sin A =√sec²A+1/secA
And cosec A is reciprocal of sin A Therefore → cosec A = sec A /√sec²A+1
Make sure it is plus + not minus -
🎉
07:28 me sin square A=1-cos2A hota h
9:27 me cos^2 A +Sin^2 A= 1✓ but... But... Sin^2A=1-Cos^2✓ not Sin^2A=1+Cos^2 x 😅
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Sir aap nai question no 3 nhi deya hai yai question no 4hai
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7:28 , sir I think you made a sign mistake.
Sin²A=1-Cos²A (👆I think this is correct sir )
Can't understand anything . I understood everything till 8.2 but now I don't know why I am not able to understand it.
Same😢
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7:32 sin²A = cos²A - 1
Sir ek video all formulas ki bhi
Sir I think you made a mistake in 8.3 q2 you put sin²a=1+cos² but it should be sin²=1-cos² if I'm wrong correct me
Sir 2 number ka pehle vala 2nd step aap ka galti hoo gaya hai, vo sin square a =1-cos square a hoga na?
2 x is good too
Coooorrect I always use 2x at every video😅
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7:26 is done wrong by sir it's been a mistake
Bhai ye chapter ka 4 th q al parts maine 1:43 minute me solve kardea ye video dekh ke
7:27 sir isme cos²A+sin²A=1 to cos²A us side me jakar sin²A=1-cos²A hona chahiye
19:46 what is the value of sin theta
Thanks for the best explanation sir😊 i am watching your UA-cam channels all😊
Sin square A = 1- Cos square A
in 2 question
Sir. Ye sum no 2 ka 1 part matlab sin A mein apne sec2 A+ 1 upon mein sec A hai to aage wale cosec A mein to sin A ki value sec2 A- 1 upon mein sec A liya hai
7:28 1- cos²A hona chahiye tha na bhaiya
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7:26 sir yaha par cos²A left se right jayega toh woh 1 - cos²A hoga na ?
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Sir, How to easily understand the question in the application of the trigonometry chapter and how to draw right angle triangle diagram easily
8.1 and 8.2 are kinda easily but 8.3 is hard NGL... U can obviously take the help of internet to practice 8.3 and diagram is so easy to draw tell me what's bothering u
Dh 1:18
Bhai saari mistake or galat h koi mat dekhna video 😊 time kharab h 😅
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Sir, with the help of these three formulas will complete 8.3 be made?
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