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Yogita Ingle 4 years, 9 months ago
A number that can be represented in form p + iq is defined as a complex number. [Where, p and q are real numbers and i= √-1]. For a complex number z = p + iq, p is known as the real part, represented by Re z and q is known as the imaginary part represented by Im z of complex number z.
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Gaurav Seth 4 years, 9 months ago
∵ a = √3 + 1, b = √3 – 1, C = 60°
∵ A + B + C = 180°
∴ A + B = 120° .......(i)
∵ From law of tangent, we know that
∴ c = √6 , A = 105°, B = 15°
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Gaurav Seth 4 years, 9 months ago
The Syllabus in the subject of Mathematics has undergone changes from time to time in accordance with growth of the subject and emerging needs of the society. Senior Secondary stage is a launching stage from where the students go either for higher academic education in Mathematics or for professional courses like Engineering, Physical and Biological science, Commerce or Computer Applications. The present revised syllabus has been designed in accordance with National Curriculum Framework 2005 and as per guidelines given in Focus Group on Teaching of Mathematics 2005 which is to meet the emerging needs of all categories of students. Motivating the topics from real life situations and other subject areas, greater emphasis has been laid on application of various concepts. Click on the link:
<a href="https://imgk.timesnownews.com/media/cbse_12_REVISEDMathematics_Sr.Sec_2020-21.pdf">https://imgk.timesnownews.com/media/cbse_12_REVISEDMathematics_Sr.Sec_2020-21.pdf</a>
Posted by Abhishek Verma 4 years, 9 months ago
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Meghna Thapar 4 years, 9 months ago
Degrees are a unit of angle measure. A full circle is divided into 360 degrees. For example, a right angle is 90 degrees. A degree has the symbol ° and so ninety degrees would written 90°. The definition of a degree is any series of steps, a point in a scale or a stage in a scale. An example of degree is the first step in a science project. An example of degree is 98.6 for the human normal body temperature. An example of degree is a high level of strength in an exercise regime.
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Gaurav Seth 4 years, 9 months ago
SET
A set is a well-defined collection of distinct objects. Well-defined collection means that there exists a rule with the help of which it is possible to tell whether a given object belongs or does not belong to given collection. Generally sets are denoted by capital letters A, B, C, X, Y, Z etc.
Posted by Adweta Mishra 4 years, 9 months ago
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Gaurav Seth 4 years, 9 months ago
Let the first term be 'a'
The common difference be 'r'
nth term is = a*r^(n-1)
So
first term
a1 = a*r^0
a = 18
second term
a2 = a*r^1 = -12
hence r = -2/3
Third term
a3 = 18*(-2/3)^2
= 8
Hence
a = 18
r = -2/3
512/729 = 18*(-2/3)^n -------(1)
after cross multiplying 18 we have to find the power of n which satisfies (-2/3)^n = 256/6561
we obtain (-2)^8 = 256 and 3^8 = 6561
therefore (1) becomes
18*(-2/3)^8 = 512/729
n-1 = 8
Therefore it is the 9th term
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Gaurav Seth 4 years, 9 months ago
Aryabhata invented zero.
Aryabhata is the first of the great astronomers of the classical age of India. He was born in 476 AD in Ashmaka but later lived in Kusumapura, which his commentator Bhaskara I (629 AD) identifies with Patilputra (modern Patna). Aryabhata gave the world the digit "0" (zero) for which he became immortal.
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Rohit Rana 4 years, 9 months ago
0Thank You