A complex fractional problem's step by step solution and explanation done in an online class session.

Appollonious theorem: class 10: geometry

Subject of this video is related to arithmetic progression problems of class 10, part 7 how many two digit numbers are divisible by 3.

Arithmetic progression problems: class 10: part 6 check whether 301 is a term of the list of numbers 5, 11, 17, 23...

Arithmetic progression problems: class 10: part 5 determine the a.p. whose 3rd term is 5 and the 7th term is 9.

Arithmetic progression problems: class 10: part 4 which term of a.p. : 21, 18, 15......is -81

Arithmetic progression problems: class 10: part 3 find the 10th term of a.p. : 2, 7, 12....

Arithmetic progression problems: class 10: part 2 for the following a.p write the first term and the common difference. -5, -1, 3, 7....

Arithmetic progression problems: class 10: part 1 find first 10 terms of a.p. if a=10, d=10

Introduction to arithmetic progression: part 2 let us understand what is there in the first part i.e., nth term formula.

Let us make ap easy for ourself.....ap is divided into 2 sections i.e., 1) nth term formula 2) sum of nth term formula so, after knowing this let us study ap.

Trigonometry part 57 : class 10 a bird was flying in a line parallel to the ground from at height of 2000 meters. tom, standing in the middle of the field , he observed the bird making an angle of elevation 30°. after 3 minutes, he again observed it with an angle of elevation of 45°. find the speed of the bird in kilometers per hour. ( √3 = 1.73 )

Trigonometry part 56 : class 10 a circus artist is climbing from the ground along a rope stretched from the top of a vertical pole and tide to a peg at the ground. the height of the pole is 12 m and the angle made by the rope with the ground level is 30°. calculate the distance covered by the artist in climbing to the top of the pole.

Trigonometry part 55 (2) class 10 a man on a cliff observes a boat at an angle of depression 30°, which is sailing towards the point of the shore immediately beneath him, there minutes later the angle of depression of the boat is found to be 60°. assuming that the boat sail at a uniform speed determine how much more time it will take to reach the shore.

Trigonometry part 55 (1) class 10 a man on a cliff observes a boat at an angle of depression 30°, which is sailing towards the point of the shore immediately beneath him, there minutes later the angle of depression of the boat is found to be 60°. assuming that the boat sail at a uniform speed determine how much more time it will take to reach the shore.

Trigonometry part 54 (2) class 10 the angle of elevation of a cloud from a point 60m above a lake is 30° and the angle of the depression of the reflection of cloud in the lake is 60°. find the height of the cloud.

Trigonometry part 54 (1) class 10 the angle of elevation of a cloud from a point 60m above a lake is 30° and the angle of the depression of the reflection of cloud in the lake is 60°. find the height of the cloud.

In this video, i give the method of solution for an electrostatics question that is required to find out-work required to move a charge near a line of charge. (a) use gauss’ law to derive the expression for the electric field ( e ) due to a straight uniformly charged infinite line of charge density  c/m. (b) draw a graph to show the variation of e with perpendicular distance r from the line of charge. (c) find the work done in bringing a charge q from perpendicular distance r1 to r2 (r2 > r1). this video is for part c only

Significance of equilibrium constant is the subject of this video lesson.

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Trigonometry part 53 (iii) class 10 a person standing on the bank of a river observes that the angle of elevation of the top of a tree standing on the opposite bank 60°. when he moves 40 m away from the bank he finds the angles of elevation to be 30° . finds the height of the tree width of the river. ( √3 = 1.73) all boards -aapkatutor