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Ask QuestionPosted by Raja Kumar 6 years, 2 months ago
- 2 answers
Posted by Aayush Kumar Chandrawanshi 6 years, 2 months ago
- 3 answers
Yogita Ingle 6 years, 2 months ago
Let x be any positive integer. Then, it is of the form 3q or, 3q + 1 or, 3q + 2.
So, we have the following cases :
Case I : When x = 3q.
then, x3 = (3q)3 = 27q3 = 9 (3q3) = 9m, where m = 3q3.
Case II : When x = 3q + 1
then, x3 = (3q + 1)3
= 27q3 + 27q2 + 9q + 1
= 9 q (3q2 + 3q + 1) + 1
= 9m + 1, where m = q (3q2 + 3q + 1)
Case III. When x = 3q + 2
then, x3 = (3q + 2)3
= 27 q3 + 54q2 + 36q + 8
= 9q (3q2 + 6q + 4) + 8
= 9 m + 8, where m = q (3q2 + 6q + 4)
Hence, x3 is either of the form 9 m or 9 m + 1 or, 9 m + 8.
Posted by Aashitha S 6 years, 2 months ago
- 1 answers
Posted by Ayush Kumar 6 years, 2 months ago
- 1 answers
Yogita Ingle 6 years, 2 months ago
Let height of air craft = h = 1500√3 and ground distance= d
Then we have tan 60 = h/d
√3 = 1500√3/d
⇒ d =1500
The ground distance is 1500m
Let the ground distance after 15 second is d1
We have tan 30 =1500 √3/d1
⇒ 1/√3 = 1500√3/d1
⇒ d1 = 4500
The ground distance is 4500m
The plane has traveled d1-d = 4500-1500=3000 m
Plane has traveled 3000 m in 15 sec.
Hence the speed = distance/time
= 3000/15
= 200 m/s or 200*3600/1000 =720 km/h
Speed of Jet plane is 720 km/h
Posted by Rohan Sul 6 years, 2 months ago
- 2 answers
Dinesh Kumar 6 years, 2 months ago
Posted by Vikram Singh 6 years, 2 months ago
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Aayush Kumar Chandrawanshi 6 years, 2 months ago
Posted by Akshay K 6 years, 2 months ago
- 2 answers
Yogita Ingle 6 years, 2 months ago
For this let reverse the AP..
now first term = a = -62
common difference = d = 3
now 11th term from this side is...
A11 = a+10d = -62+10(3) =-62 + 30 = -32
hence 11th term from the last is -32
Posted by Akshay K 6 years, 2 months ago
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Aadya Singh ? 6 years, 2 months ago
325 = 5×5×13...
Posted by Ayush Negi 6 years, 2 months ago
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Posted by Rohit Rahaman Scientists 6 years, 2 months ago
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Broken Buddy 6 years, 2 months ago
Posted by Jishnu N Gopi 6 years, 2 months ago
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Broken Buddy 6 years, 2 months ago
(1+secA)/secA × (1-cosA)
(1/secA+1)(1-cosA)
(CosA+1)(1-cosA)
1-cos²A
= sin²A = RHS
Broken Buddy 6 years, 2 months ago
(1+secA)(1-cosA)/secA=sin²A
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Aadya Singh ? 6 years, 2 months ago
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Bhumika Agrawal 6 years, 2 months ago
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