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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 6851. |
2^1000 |
| Answer» | |
| 6852. |
Sin2x+cot2x=2 |
| Answer» 45° | |
| 6853. |
Cos24°+cos55°+cos125°+cos204°+cos300°=??? |
| Answer» | |
| 6854. |
Solve sin 2x -sin4 x+sin 6x =0 |
| Answer» Sin2x-sin4x+sin6x=0, sin2x+sin6x=sinA, -2sin4xcos2x=sinA, -2cos2x=1, cos2x=-1/2,cos2x=cos60°,2x=60°, x=30° | |
| 6855. |
Sec^2o+ cosec^2o>4 |
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| 6856. |
Cube root of 9+40i |
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| 6857. |
9+40i |
| Answer» | |
| 6858. |
Find fourth term in expansion of (x-2y)¹² |
| Answer» -1760x raise to power9 and y raise to power3 | |
| 6859. |
156+456t |
| Answer» | |
| 6860. |
What is the value of -: cos1.cos2.cos3....................cos87.cos89 =?Challenge to all.. |
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Answer» Please write step wise soln. Also 1 1/2^1/2 |
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| 6861. |
Lcm Of 123 |
| Answer» 41*3 | |
| 6862. |
Prove that :- sin10°sin30°sin50°sin70° = 1/16 |
| Answer» LHS sin10 sin30 sin50 sin70Convert in cos by 90- angleFrom last Cos20 cos40 cos60 cos 80cos60=1/21/2 (cos20 cos40 cos80)Divide by 2sin20 1/2 (2sin20cos20 cos40 cos80/2sin20)1/2 (sin40cos40 cos80/2sin20)1/2 (2sin40cos40 cos80/2*2sin20)1/2 (sin80cos80/4sin20)1/2 (2sin80cos80/2*4sin20)1/2 (sin160/8sin20)Sin160=sin201/2 (sin20/8sin20)Sin20 cancel with sin201/2 (1/8)1/16RHS | |
| 6863. |
What is the square root of -7-11i |
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| 6864. |
In the figure, how many players are young |
| Answer» | |
| 6865. |
Limit of sin 1/x when x-infinity |
| Answer» | |
| 6866. |
Prove that 1+tanA/2/1-tana/2=secA+tanA |
| Answer» proove | |
| 6867. |
What is a relative denaity |
| Answer» Density of a substance upon density of water | |
| 6868. |
What is difference between permutation and combimation in general? |
| Answer» \tPermutationCombinationThe different ways of arranging a set of objects into a sequential order are termed as Permutation.One of the several ways of choosing items from a large set of objects, without considering an order is termed as Combination.The order is very relevant.The order is quite irrelevant.It denotes the arrangement of objects.It does not denote the arrangement of objects.Multiple permutations can be derived from a single combination.From a single permutation, only a single combination can be derived.They can simply be defined as ordered elements.They can simply be defined as unordered sets.\t | |
| 6869. |
Difference between sequence and series? |
| Answer» The list of numbers written in a definite order is called a sequence. The sum of terms of an infinite sequence is called an infinite series. A sequence can be defined as a function whose domain is the set of Natural numbers. Therefore sequence is an ordered list of numbers and series is the sum of a list of numbers.Example of a sequence:\xa02, 4, 6, 8, 10 …\xa0Now if we add them up:\xa02+4+8+10+ …\xa0This is a series. | |
| 6870. |
a, b, c are in Ap as well as in gp then prove that a=b=c |
| Answer» | |
| 6871. |
87+9853+8473_693: |
| Answer» | |
| 6872. |
How to find domain and range of f(x)= 3x2-5 |
| Answer» Put x as any real no. That will be domain and f(x) will give us range | |
| 6873. |
If f(x)=2tanx/1-tan²x then evaluate f(tanx) |
| Answer» | |
| 6874. |
Prove that: cos2xcosx/2-cos3xcos9x/2=sin5xsin5x/2 |
| Answer» | |
| 6875. |
6×3= |
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Answer» 18 18 |
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| 6876. |
Exercise 3.3 question number 11. |
| Answer» sin^26x-sin^24x= since sin^2A - sin^2B = sin(A+B) sin(A-B) sin(6x+4x) sin(6x-4x) sin10x sin2x | |
| 6877. |
The minute hand of a watch is 1.5 cm long.how far does it\'s tip I\'ve in 40 minute |
| Answer» | |
| 6878. |
Find domain of the real function of √(2-x)(x-4) |
| Answer» | |
| 6879. |
Find the equation of the side of triangle whose vertices are (2,1) (-2,3) (4,3) |
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| 6880. |
Ch 9 exercise 9.2 question no 10 |
| Answer» | |
| 6881. |
Evaluate lim sinax/tanbx |
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| 6882. |
Find the range of function f(x) = cos x + sin x + √2 . |
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| 6883. |
Marks division of half yearly chapters |
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| 6884. |
Sum of the first p,q and r terms of an a.p |
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| 6885. |
Cos80 Cos40 what is it mean |
| Answer» | |
| 6886. |
Cos60+sin30+tan45 |
| Answer» 1/2+1/2+1=2 | |
| 6887. |
Integration of {cos9x+cos6x}/{2cos5x-1} |
| Answer» | |
| 6888. |
How many rectangle can be drawn through 21 points on a circle? |
| Answer» | |
| 6889. |
Prove that sin5x-2sin3x+sinx/cos5x-cosx=tanx |
| Answer» By applying transformations 2sin(5x+x/2)cos(5x_x/2)_2sin3x÷ _2sin (5x+x/2)sin(5x_x/2). And solve it | |
| 6890. |
Tan× by first principles |
| Answer» =sinx/cosx | |
| 6891. |
Why students are practice maths |
| Answer» To prove that they r really mad | |
| 6892. |
Sina-cosa+1/sina+cosa-1=1/sina-tana |
| Answer» | |
| 6893. |
If tan(180°cos |
| Answer» | |
| 6894. |
First, second and last terms of an apis a,b,c prove that the sum is (a+c)(b+c -2a)/2(b-a) |
| Answer» | |
| 6895. |
Z square - 4 Z + 13 equal to zero |
| Answer» | |
| 6896. |
Using concept of slope prove that a b c d are angular points of triangle |
| Answer» | |
| 6897. |
Find the sum of n terms of the series: 3+15+35+63+....... |
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| 6898. |
Find the equations of the line parallel to the 3x-4y+2=0 and passing through the point (-2,3). |
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| 6899. |
If x by 3, 2 by 3 equal to 4 by 3, y by 3 then find the value of x and y |
| Answer» | |
| 6900. |
Passing through (0,0) with slope m |
| Answer» y=mx | |