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votes
1
answer
811
views
1
answer
prove that : $sin(A+B)sin(A-B) = sin^{2}A-sin^{2}B$
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
862
views
1
answer
If $sinA = \frac{1}{2}$, find the value of sin3A
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
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1
answer
2.9k
views
1
answer
If A and B are obtuse angles and $sinA = \frac{5}{13}$ and $cosB = -\frac{4}{5}$ then find sin(A+B)
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
642
views
1
answer
Find the value of $log\big(\frac{2}{3}\big) + log\big(\frac{4}{5}\big) - log\big(\frac{8}{15}\big)$
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
5.2k
views
1
answer
Find the area of the triangle whose vertices are (3,1),)(1,3) and (-3,-2).
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
3.2k
views
1
answer
Find the surface of the cuboid of dimensions 26 cms, 20 cms, and 12 cms.
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
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1
answer
3.2k
views
1
answer
If coefficient of variation of a disturbance is 75% and standard deviation is 24, find its mean.
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
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1
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3.4k
views
1
answer
If A = \begin{bmatrix} 3 & -1 \\ 2 & 4 \end{bmatrix}, B = \begin{bmatrix} 1 & 2 \\ -3 & 0 \end{bmatrix}. Find X such that 2X +3A - 4B = I.
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
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1
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690
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1
answer
Resolve into partial fractions $\frac{x^{2}+1}{x(x^{2}-1)}$
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
1
vote
1
answer
6.9k
views
1
answer
Calculate the mean deviation about the mean of the following data: 3,6,5,7,10,12,15,18
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
2.5k
views
1
answer
Without using calculator find the value of $\cos 570^{\circ} \sin 510^{\circ}+\sin \left(-330^{\circ}\right) \cos \left(-390^{\circ}\right)$
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
974
views
1
answer
prove that $\frac{\sin 4 \theta+\sin 2 \theta}{1+\cos 2 \theta+\cos 4 \theta}=\tan 2 \theta$
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
776
views
1
answer
prove that $\frac{\sin 3 A-\sin A}{\cos 3 A+\cos A}=\tan A$
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
663
views
1
answer
prove that $\tan ^{-1} \frac{1}{4}+\tan ^{-1} \frac{2}{9}=\cot ^{-1} 2$
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
629
views
1
answer
Resolve into partial fractions $\frac{2 x+1}{(x-1)\left(x^{2}+1\right)}$
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
686
views
1
answer
prove that$(\cos 20^{0} \cdot \cos 40^{0} \cdot \cos 60^{0} \cdot \cos 80^{0}=\frac{1}{16}$
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
720
views
1
answer
If $tan\frac{\theta}{2} = \frac{2}{3} find the value of 2sin\theta + 3sin\theta.$
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
1
vote
3
answers
7.6k
views
3
answers
Find the length of the perpendicular from the point (5,4) on the straight line 2x+y=34.
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
1
vote
1
answer
5.9k
views
1
answer
Find the equation of the line passing through (3,-4) and having slope $\frac{3}{2}$
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
720
views
1
answer
Find the equation of line passing through (3,4) and perpendicular to the line 2x-3y+5=0
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
1
vote
1
answer
13k
views
1
answer
Find the acute angle between the lines 3x - y = 4 and 2x + y = 3
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
3.0k
views
1
answer
Find the capacity of a cylindrical water tank whose radius is 2.1m and length is 5m.
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
3.6k
views
1
answer
External dimensions of a wooden cuboid are 30cm x 25cm x 20cm. If the thickness of wood is 2 cm all round.Find the volume of the wood contained in the cuboid formed.
jee mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
727
views
1
answer
Solve the following equations by matrix inversion method:
engineering mathematics updated 4.0 years ago by krithikkm200 • 10
0
votes
1
answer
5.8k
views
1
answer
Find the area of rhombus whose diagonals are 6 cm and 9 cm.
jee mathematics updated 4.0 years ago by krithikkm200 • 10
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