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Sia ? 6 years, 6 months ago
sin11asina+sin7asin3a/cos11asina+cos7asin3a
=2sin11asina+2sin7asin3a/2cos11asina+2cos7asin3a
=[{cos(11a-a)-cos(11a+a)}+{cos(7a-3a)-cos(7a+3a)}]/
[{sin(11a+a)-sin(11a-a)}+{sin(7a+3a)-sin(7a-3a)}]
=(cos10a-cos12a+cos4a-cos10a)/(sin12a-sin10a+sin10a-sin4a)
=(cos4a-cos12a)/(sin12a-sin4a)
=[2sin(4a+12a)/2sin(12a-4a)/2]/[2cos(12a+4a)/2sin(12a-4a)/2]
=sin8asin4a/cos8asin4a
=sin8a/cos8a
=tan 8a
Posted by Rohit Singh Sheoran 6 years, 6 months ago
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Posted by Anshika Chauhan 6 years, 6 months ago
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Sia ? 6 years, 6 months ago
A logical truth is a statement which is true, and remains true under all reinterpretations of its components other than its logical constants. It is a type of analytic statement.
In logic, a truth function is a function that accepts truth values as input and produces a truth value as output, i.e., the input and output are all truth values
Posted by Abhishek Raj 6 years, 6 months ago
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Tanvi Chauhan?? 6 years, 6 months ago
Posted by Vinith Vinith 6 years, 6 months ago
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You can get NCERT solutions here : <a href="https://mycbseguide.com/ncert-solutions.html">https://mycbseguide.com/ncert-solutions.html</a>
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Macro economic study since micro economy studies behavior of a particular firm where as macro economy studies about the industry where industry means summation of all individual firms of the economy.
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| Type of Error | Example | How to minimize it |
| Random errors | You measure the mass of a ring three times using the same balance and get slightly different values: 17.46 g, 17.42 g, 17.44 g | Take more data. Random errors can be evaluated through statistical analysis and can be reduced by averaging over a large number of observations. |
| Systematic errors |
The cloth tape measure that you use to measure the length of an object had been stretched out from years of use. (As a result, all of your length measurements were too small.) The electronic scale you use reads 0.05 g too high for all your mass measurements (because it is improperly tared throughout your experiment). |
Systematic errors are difficult to detect and cannot be analyzed statistically, because all of the data is off in the same direction (either to high or too low). Spotting and correcting for systematic error takes a lot of care.
|
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Varun Biban 6 years, 6 months ago
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Capital is the wealth in the form of money or other assets owned by a person or organization or available for a purpose such as starting a company or investing.
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Posted by Sangeeta Kanojia 6 years, 6 months ago
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Yogita Ingle 6 years, 6 months ago
Lycopodium is commonly known as ‘club moss’ due to their moss like appearance and club shaped strobili. It has about 400 species, which are cosmopolitan in distribution. They are found in colder arctic region as well as in temperate, tropical and sub-tropical regions but they are abundantly found in tropical zones.
Thirty three species of Lycopodium have been reported from India. Mostly it is found growing in moist and shady places which are rich in humus and other organic matters. Some of the common species are L. clavatum, L. phlegmaria, L. cernuum, etc.
Posted by Garima Singh 6 years, 6 months ago
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Yogita Ingle 6 years, 6 months ago
Species is the basic unit of classification that has similar characteristics among the members of the same species
Posted by Himanshi Gupta 6 years, 6 months ago
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Sia ? 6 years, 6 months ago
Connective tissue has three main components:
- Ground substance
- Fibers
- Cells
Together the ground substance and fibers make up the extracellular matrix. The composition of these three elements vary tremendously from one organ to the other. This offers great diversity in the types of connective tissue.
Structural elements of connective tissue: Connective tissues consist of three parts: cells suspended in a ground substance or matrix; and most have fibers running through it.
Ground substance is a clear, colorless, viscous fluid that fills the space between the cells and fibers. It is composed of proteoglycans and cell adhesion proteins that allow the connective tissue to act as glue for the cells to attach to the matrix. The ground substance functions as a molecular sieve for substances to travel between blood capillaries and cells.
Posted by Sarandeep Bains 6 years, 6 months ago
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Yogita Ingle 6 years, 6 months ago
As you have Force on Left Hand Side, the right hand side quantities also represent force....so at and bt2 represent force.....
but dimensional formula of force is
Force: M1 L1 T(-2)
so, dimensional formula of at and bt 2 is also M1 L1 T(-2)
Means, [aT] = M1 L1 T(-2)
SO, [a] = (M1 L1 T(-2) )/T
so [a] = M1 L1 T(-3)
Same way for b,
bt2 = force
so b= force/t2 = M1 L1 T(-4)
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Sia ? 6 years, 6 months ago
Total Number of students in class = 102
Students Failed in Maths = 50
Students Failed in Physics= 45
Students Failed in Chemistry = 40
Students Failed in two or three subjects = 32
Total number of students failed = 167 students
Students Failed in two or three Subjects = 167 - 102
Students failed in all three Subjects = 65
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