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Ask QuestionPosted by Harish Pandave 4 years, 9 months ago
- 2 answers
Posted by Mahak Sadhya 4 years, 9 months ago
- 4 answers
Mahak Sadhya 4 years, 9 months ago
Posted by Pragya Laddha 4 years, 9 months ago
- 2 answers
Manav Kumar 4 years, 9 months ago
Yogita Ingle 4 years, 9 months ago
Diamter = 7 m
so, radius = 3.5 m
Earth dug out from (cylindrical) well
=π×r×r×h
= 22/7 ×3.5×3.5×20
=770m3
to from platform ...... (cuboidal)
volume of cuboid = l×b×h
770=22×14×h
so, height = 770/22 ×14 = 2.5m
Posted by Sukhman Preet 4 years, 9 months ago
- 3 answers
Posted by Ashish Sharma 4 years, 9 months ago
- 1 answers
Gaurav Seth 4 years, 9 months ago
A n s w e r
4 = 2 x 2
7 = 7 x 1
14 = 2 x 7
LCM = 2 x 2 x 7 = 28
The three bells will ring together again at 6:28 am
Posted by Vinay Karigar 4 years, 9 months ago
- 1 answers
Nikhil Agrawal 4 years, 9 months ago
Posted by Rahul Kumar Yadav 4 years, 9 months ago
- 1 answers
Gaurav Seth 4 years, 9 months ago
Let speed of boat in still water be x km/h and speed of stream be y km/h.
Speed upstream= (x - y) km/h
Speed downstream= (x + y) km/h
On subtracting, we get,
On solving, we get,
Speed of boat in still water = 8 km/h
And, Speed of stream = 3 km/h
Posted by Riya Vishwakarma 4 years, 9 months ago
- 3 answers
Yogita Ingle 4 years, 9 months ago
Mode = 2 Mean – 3 Median. d. 3 Median = 2 Mode + Mean.
Posted by Bensan Abraham 4 years, 9 months ago
- 1 answers
Yogita Ingle 4 years, 9 months ago
The product of LCM and HCF of two numbers is equal to the product of two numbers.
<div> LCM = product of the numbers / HCF</div>LCM = 26×91 /13
LCM = 2366 / 13
LCM = 182
Posted by Nishant Mathur 4 years, 9 months ago
- 2 answers
Yogita Ingle 4 years, 9 months ago
Given that HCF = 9 and the numbers are 306 and 657 .
LCM = ?
We know that LCM × HCF = product of two numbers
⇒LCM × 9 = 306 × 657
⇒LCM = 201042/9 = 22338
Ranbeer Boparai 4 years, 9 months ago
Posted by Ayushi Maurya 4 years, 9 months ago
- 2 answers
Yogita Ingle 4 years, 9 months ago
Let roots 4k and 5k
4k+5k =-b/a
9k =-b/a
K=-b/9a..... (1)
4k*5k=c/a
20k2=c/a
Sub ... (1)
20 (-b/9a)2=c/a
20 (b2/81a2)=c/a
20 b2 = 81 ac
Ranbeer Boparai 4 years, 9 months ago
Posted by Samunder Singhal 4 years, 9 months ago
- 2 answers
Mayank Rauthan 4 years, 9 months ago
Posted by Sakshi Tiwari 4 years, 9 months ago
- 1 answers
Yogita Ingle 4 years, 9 months ago
Given, sum of first m terms of an A.P. is n.
Also, sum of first n terms is m.
Subtracting (2) from (1),
Hence, the sum of its first (m + n) terms is -(m + n).
Posted by Pragati Kumar 4 years, 9 months ago
- 5 answers
Mayank Rauthan 4 years, 9 months ago
Posted by Uma Yadav 4 years, 9 months ago
- 5 answers
Ishan Goyal 4 years, 9 months ago
Posted by Uma Yadav 4 years, 9 months ago
- 1 answers
Radha Mistry?☺ 4 years, 9 months ago
Posted by Nandita Nishanth 4 years, 9 months ago
- 1 answers
Yogita Ingle 4 years, 9 months ago
In the given figure, quad. ABCD is circumscribed touching the circle at P, Q, R and S. If AP = 5 cm, BC= 7 c m and CS = 3 cm. Then, the length of AB = ?
Ans
Tangents drawn from an external point to a circle are equal.
Posted by Bhumit Saroha 4 years, 9 months ago
- 0 answers
Posted by Anushka Mittal 4 years, 9 months ago
- 1 answers
Gaurav Seth 4 years, 9 months ago
The Trigonometry Ratios of the angle θ in the triangle APM are defined as follows.
Opposite over Hypotenuse – Sin, Adjacent Over Hypotenuse – Cos, Opposite over Adjacent – Tan, Hypotenuse over Opposite – Cosec, Hypotenuse Over Adjacent – Sec and Adjacent over Opposite – Cotangent,
The ratios defined above are abbreviated as sin θ, cos θ, tan θ, cosec θ, sec θ and cot θ respectively. Note that the ratios cosec θ, sec θ and cot θ are respectively, the reciprocals of the ratios sin θ, cos θ and tan θ. So, the trigonometric ratios of an acute angle in a right triangle express the relationship between the angle and the length of its sides.
Opposite of Sin: Cosecant
Opposite of Cos: Secant
Opposite of Tan: Cotangent
Opposite of Cosecant: Sin
Opposite of Cotangent: Tan
Opposite of Secant: Cosecant
Trig Mnemonics – Some People Have, Curly Black Hair Through Proper Brushing.
Here, Some People Have is for
- Sin θ= Perpendicular/ Hypotenuse.
Curly Black Hair is for
- Cos θ= Base/ Hypotenuse.
Through Proper Brushing is for
- Tan θ= Perpendicular/Base
Trigonometric Ratios of Some Specific Angles
We already know about isosceles right angle triangle and right angle triangle with angles 30º, 60º and 90º.
Can we find sin 30º or tan 60º or cos 45º etc. with the help of these triangles?
Does sin 0º or cos 0º exist?
<figcaption id="caption-attachment-76384">Trig Table</figcaption>
</figure>
T
Posted by Dhiraj Singh 4 years, 9 months ago
- 1 answers
Meghna Thapar 4 years, 8 months ago
Displacement is defined as the moving something from its position. Rotation is defined as the action of rotating around an axis or center. A geometrical figure can be displaced or rotated in either order to produce the same end result. There are some general rules for the rotation of objects using the most common degree measures (90 degrees, 180 degrees, and 270 degrees). The general rule for rotation of an object 90 degrees is (x, y) --------> (-y, x).
Posted by Anushka Mittal 4 years, 9 months ago
- 4 answers
Posted by Lipi Nag 4 years, 9 months ago
- 4 answers
Posted by Nimesh Kumar 4 years, 9 months ago
- 0 answers
Posted by Lipi Nag 4 years, 9 months ago
- 5 answers
Pooja Jangid 4 years, 9 months ago
Lipi Nag 4 years, 9 months ago
Posted by Bhumittal Sharma 4 years, 9 months ago
- 0 answers
Posted by Sakshi Kumari 4 years, 9 months ago
- 1 answers
Yogita Ingle 4 years, 9 months ago
Given O is a centre of a concentric circles.
Let r =OB = 7cm
R = OA = 14cm
<AOC = 40°
We know that,
Now ,
Area of the shades region
= Area of the sector AOC - Area of the sector ABD
=
=
=
=
=
=
Therefore,
Area of the shaded region =
Posted by Unbelieve Able 4 years, 9 months ago
- 2 answers
Manshwee Sai 4 years, 9 months ago
Anushka Gurusingha 4 years, 9 months ago
Posted by Bhavna Dwivedi 4 years, 9 months ago
- 4 answers
Gaurav Seth 4 years, 9 months ago
Given polynomial:
Product of zeroes of this polynomial = 4.
A polynomial is an expression of more than one or two algebraic term, may be a sum of those terms also.
We know, that the product of zeroes of a polynomial can be given by =c/a
Hence, for the polynomial: , a = a, b = -6 and c = -6.
Product of zeroes of this polynomial = (-6)/a
4 = -6/a
a = -6/4= -3/2
Manav Kumar 4 years, 9 months ago
Posted by Tanya Dubey 4 years, 9 months ago
- 4 answers
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Nikhil Agrawal 4 years, 9 months ago
1Thank You