Students and Teachers Forum
As we know. In 12 hr. hour hand turns 360o. or, In 1 hr. hour hand turns 360o/ 12 = 30o. or, In 60 min. hour hand turns 30o. .....
All ores are minerals while all minerals are not ores as some of them might have a large amount of unwanted substances such as sand, stones and earthly impurities. For example: Aluminium occurs in earth's crust in the form of two minerals .....
Please post the image of figure .....
राम झ्यालबाट हामफालेर मर्न लाग्दै थियो .....
The modern English word and name for our planet ‘Earth’, is said to go back at least 1,000 years. Only planet that wasn't named after a Greek or Roman god or goddess. For example, Saturn was named after the Roman god of .....
It is when an object starts from a point and covers certain distance and then comes back to the same point. In this case when the man returns back to the same place: Displacement = 0 Distance = Twice the length of the path Velocity = .....
The increase in heartbeat is characterized by the term tachycardia.A normal heart rate is 60 to 100 beats per minute. Tachycardia is considered a heart rate of greater than 100 beats per minute. If you are exercising, or performing any kind of .....
Genetic Diversity:
Each member of any animal or plant species differs widely from other individuals in its genetic makeup because of the large number of combinations possible in the genes that give every individual specific .....
Here, Let ∡B = x & ∡ D =y, Then ∡B = ∡CAB = x [ BC = AC] & ∡D = ∡ACD = y [ AC = AD] Now in triangle ABD, ∡B + ∡D = 90o [ Can you say the reason?] or, x + y .....
Stone inscriptions are the words or letters written, engraved, painted, or otherwise traced on a surface of the stone. They appear in contexts both small and monumental. Stone inscriptions are the most important source of history. If you are from .....
Sender's Address Receiver’s Address Salutation
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Surely, Nepal is known as a multireligious, multiethnic and multilingual country. Because nearly 125 castes live in Nepal. They speak 123 languages. They follow ten 10 different religions. Hence, Nepal is known as multireligious, multiethnic and .....
Here, Height of prism = h = 15cm Base of prism is triangle having sides 6 cm, 8cm and 10cm. So, Area of triangle(base) = 1/2 base ⨯ height = 1/2 ⨯ 6cm ⨯ 8cm = 24cm2 Now, Perimeter of base = 6cm + 8cm + 10 .....
A gene is the basic physical and functional unit of heredity. Genes, which are made up of DNA, act as instructions to make molecules called proteins. In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases. The .....
Compare the given equation 4x2 - 20xy + 25y2 = 0 with ax2 + by2 + 2hxy + 2gx + 2fy + c =0 we get a = 4 , b = 25, h = -10 Now, find h2 & ab You will get both are 100. If h2 = ab, lines are .....
Compare the given equation 2x2 - 2hxy + 3y2 = 0 with ax2 + by2 + 2hxy =0 we get a = 2 , b = 3, h = -h Now, find h2 & ab If h2 = ab, lines are //. So, compare them & find .....
The combined equation of the line is x2 + 6xy + 9y2 + 3x + 9y = 0. Solving this : x2 + 6xy + 9y2 + 3x + 9y = x2 + 2.x.3y + (3y)2 + 3(x + 3y) = (x + 3y)2 + 3(x + 3y) ( (x + y2 ) .....
To find the angle between them, Compare given equation x2 - 5xy + 6y2 = 0 with ax2 + 2hxy + by2 = 0 and a = 1 , b = 6 & h = -5/2. If θ be the angle between them Tan θ .....
To find the angle between them, Compare given equation 2x2 - 3xy - 6y2 = 0 with ax2 + 2hxy + by2 = 0 and a = 2 , b = -3 & h = -3/2. If θ be the angle between them Tan θ .....
To find the angle between them, Compare given equation x2 + 2xy cot θ + y2 = 0 with ax2 + 2hxy + by2 = 0 and a = 1 , b = 1 & h = cotθ. If A be the angle between them Tan A .....
Compare the given equation 16x2 - 24xy + 9y2 = 0 with ax2 + by2 + 2hxy + 2gx + 2fy + c =0 we get a = 16 , b = 9, h = -12 Now, find h2 & ab You will get both are 144. If h2 = ab, lines are .....
Compare the given equation (sin2α - cos2β)x2 + 2cos α sin β xy + (cos2α - sin2β)y2 = 0 with ax2 + 2hxy + by2 + 2gx + 2fy + c =0 we get a = (sin2α - cos2β) , b = .....
Compare the given equation 11x2 + 2xy - 11y2 = 0 with ax2 + 2hxy + by2 + 2gx + 2fy + c =0 we get a = 11 , b = -11 Now, find a + b If a + b = 0 , the lines are perpendicular. Please find it & write .....
Compare the given equation x2 - y2 = 0 with ax2 + 2hxy + by2 + 2gx + 2fy + c =0 we get a = 1 , b = -1 Now, find a + b If a + b = 0 , the lines are perpendicular. Please find it & write the .....
The formula of area of cuboid = 2 ( LB + BH + LH ) Where L = length B = breadth H = .....
With this year, it will be his 4th. First Germany 2006. Second South Africa 2010. Third Brazil 2014. Forth Russia 2018. which will start from 14 June .....