Doubtnut
18,806 old videos with fewer than 5,000 views from this channel.
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1:26
IIT JEE INVERSE TRIGONOMETRIC FUNCTIONS The number of solutions of the equation `cos^(-1)((1+x^2)...
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4:28
IIT JEE LIMITS AND DERIVATIVES Evaluate:
`("lim")_(nvec0)(cos^2(1-cos^2(1-cos^2(cos^2(theta)))))/...
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2:15
IIT JEE COMPLEX NUMBERS AND QUADRATIC EQUATIONS If `z`
is a complex number, then find the minimum...
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9:31
JEE MAINS 2018 A shopkeeper sells three types of seeds `A_1, A_2a n dA_3dot`
They are sold as a ...
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1:26
IIT JEE PERMUTATIONS AND COMBINATIONS If there are 12 persons in a party, and if each two of the...
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4:15
IIT JEE TRIGONOMETRIC FUNCTIONS prove that `sinthetadotsec3theta+sin3theta,sec3^2theta+sin3^2thet...
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5:13
IIT JEE TRIGONOMETRIC FUNCTIONS The equation `2sin^3theta+(2lambda-3)sin^2theta-(3lambda+2)sinthe...
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3:43
IIT JEE COMPLEX NUMBERS AND QUADRATIC EQUATIONS Prove that the distance of the roots of the equat...
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1:51
IIT JEE PERMUTATIONS AND COMBINATIONS On the occasion if Deepawali festival, each student in a c...
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3:15
IIT JEE COMPLEX NUMBERS AND QUADRATIC EQUATIONS Find the value of
(i) `(i^(592)+i^(590)+i^(588)+...
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1:31
IIT JEE INVERSE TRIGONOMETRIC FUNCTIONS `f(x)=tan^(-1)x+tan^(-1)(1/x);g(x)=sin^(-1)x+cos^(-1)x`
...
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4:42
IIT JEE TRIGONOMETRIC FUNCTIONS A right angle is divided into three positive parts `alpha,betaa n...
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2:53
IIT JEE TRIGONOMETRIC FUNCTIONS In any `/_\ A B C ,`
prove that `(b^2-c^2)cotA+(c^2-a^2)cotB+(c^...
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4:29
IIT JEE COMPLEX NUMBERS AND QUADRATIC EQUATIONS If one root of the equation `z^2-a z+a-1=0i s(1+i...
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1:59
IIT JEE SEQUENCES AND SERIES If sum of an infinite G.P. `p ,1,1//p ,1//p^2, i s9//2`
then value ...
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1:34
IIT JEE SEQUENCES AND SERIES If `a^2+b^2,a b+b c ,a n db^2+c^2`
are in G.P., then `a ,b ,c`
are ...
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5:17
Number of roots of the equation
`2^(tan(x-pi/4))-2(0. 25)^sin^(3((x-pi/4))/(cos2x))+1=0,i s____...
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2:42
IIT JEE TRIGONOMETRIC FUNCTIONS The number of values of `theta`
in the interval `(-pi/2,pi/2)`
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1:56
IIT JEE INVERSE TRIGONOMETRIC FUNCTIONS The value of
`sin^(-1)("cot"(sin^(-1)((2-sqrt(3))/4+cos...
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1:58
Parallelograms on the same base and between the
same parallels are equal in area.
GIVEN : Tw...
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2:20
The area of a parallelogram is the product of its
base and the corresponding altitude.
GIVEN...
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5:19
IIT JEE COMPLEX NUMBERS AND QUADRATIC EQUATIONS Express the following complex numbers in `a+i b`
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4:31
IIT JEE APPLICATION OF DERIVATIVES Show that the tangent to the curve `3x y^2-2x^2y=1a t(1,1)`
m...
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1:21
IIT JEE TRIGONOMETRIC FUNCTIONS If `cos(A-B)=3/5a n dt a n At a n B=2,`
then
`cos Acos B=1/5`
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