Learn Mathematics and Excel tips

Learn Mathematics and Excel tips we will try to share basic information about mathematics, tricks and important facts about mathematics. after all, mathematics is the language of science.

we will also share some excel shortcuts and tips.

18/12/2025

Practice Worksheet | Maths | Division

15/12/2025




Learn Mathematics and Excel tips

CBSE

Problem 1:
A tree is standing vertically on the ground. From a point on the ground, which is 20 m away from the foot of the tree, the angle of elevation to the top of the tree is 45°. Find the height of the tree.

Problem 2:
A man 1.8 m tall is standing 10 m away from a building. The angle of elevation from his eyes to the top of the building is 60°. Calculate the height of the building.

Problem 3:
From a point on the ground, the angle of elevation to the top of a hill is 30°, and the angle of elevation to the bottom of the hill is 15°. If the point is 50 m away from the base of the hill, find the height of the hill.

Problem 4:
A ladder is leaning against a wall. The foot of the ladder is 4 m away from the wall, and the angle of elevation from the ground to the top of the ladder is 60°. If the ladder is 8 m long, find the height at which the ladder touches the wall.

Problem 5:
An observer is standing on a flat surface and sees the top of a mountain at an angle of elevation of 75°. If the observer is 100 m away from the base of the mountain, find the height of the mountain.

https://javalab.org/en/lever_en/Try this portal for visualization your science practical work experiences.
10/12/2025

https://javalab.org/en/lever_en/
Try this portal for visualization your science practical work experiences.

Lever A lever is a tool that transmits force using a rod. With a lever, you can work with it having little force. The length of the lever can adjust the minimum

20/11/2025

If the number of characters varies for each row, we can still make the MID formula dynamic by combining it with FIND, SEARCH, or LEN.

=MID(A1, FIND("-",A1)+1, FIND(":",A1)-FIND("-",A1)-1)

This extracts text dynamically between two markers (like “-” and “:”), even if the length changes for every row.
So instead of fixing the number of characters (like 3), we calculate it automatically using positions found by FIND.

11/11/2025
10/11/2025

एक संख्या का 4/5 उसी संख्या के दो-तिहाई से 10 अधिक है , तो वह संख्या है -
अ- 70
ब- 75
स - 69
द- 85

02/11/2025
02/11/2025

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