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CBSE Class 10 Answered

If √2 sin x^2 - 1= 0, find the value of x.
Asked by Nimmi | 19 Jan, 2019, 04:52: PM
answered-by-expert Expert Answer
begin mathsize 12px style square root of 2 space sin open parentheses x squared close parentheses space minus space 1 space equals space 0 sin left parenthesis x squared right parenthesis space equals space fraction numerator 1 over denominator square root of 2 end fraction space.............. left parenthesis 1 right parenthesis w e space k n o w comma space sin straight pi over 4 space equals space fraction numerator 1 over denominator square root of 2 end fraction space............. left parenthesis 2 right parenthesis b y space c o m p a r i n g space e q n. left parenthesis 1 right parenthesis space a n d space left parenthesis 2 right parenthesis comma space w e space h a v e space x squared space equals space straight pi over 4 space space comma space h e n c e space space x space equals space fraction numerator square root of straight pi over denominator 2 end fraction end style
 
Answered by Thiyagarajan K | 19 Jan, 2019, 06:23: PM

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CBSE 10 - Maths
PQ is a chord of length 8 cm to a circle of radius 5 cm. The tangents P and Q intersect at a point T. Find the length of the tangent TP.
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if one of the zeroes of quadratic polynomial F(x) = 4x² - 8kx - 9 is equal in magnitude but opposite in sign, find K
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CBSE 10 - Maths
from the pair of linear equations in the following problems and find their solution graphically 10 students of class 10 to part in a mathematic quiz if the number of girls is for more than the number of boys find the number of boys and girls who took part in the quiz
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CBSE 10 - Maths
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CBSE 10 - Maths
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A blacksmith has a rectangular sheet of iron. He has to make a cylindrical vessel both circular ends are closed. When he minimizes the wastage of the sheet of iron, then what is the ratio of the wastage to the utilised area of sheet?
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