This document describes a presentation on using trigonometry in daily life with a catapult model. The presentation aims to find the dimensions of a building and pyramid and their angles of elevation using a catapult. It explains how to make a catapult model with materials like cardboard, sand colors, a shoe box, and straws. It then demonstrates using the catapult to launch projectiles at the structures and using Pythagoras' theorem and trigonometric functions to calculate the distances and 39.5 degree angles of elevation of the building and pyramid. The conclusions are that the angles of both structures are equal to 39.5 degrees and the catapult can be used to measure distances.

1. PRESENTATION
USE OF TRIGONOMERTY
IN DAILY LIFE WITH
CATAPULT

2. • Aim : To find out the
dimensions of the
building & pyramid and
the angle of elevations
with the help catapult.

3. MATERIALS
REQUIRED
 CARDBOARD
 SAND COLORS
 SHOE BOX
 TISSUE PAPERS
 STRAWS
 CLAY
 CRAFT PAPERS
 METALLIC PIN
 RUBBER BAND
 ALUMINUM FOIL

4. Step 1 :
Take a shoe box & straws of 25cm
to make a building & pyramid.
Step 2 :
Make a two catapults parallel to
each other placed on road.
Step 3 :
With the help of catapult & ball
made up of aluminum foil striking
the top of the building & pyramid.

7. 25cm

8. Step 4 :
The distance between the building & pyramid is 44cm
IN ABC, B = 90.BC=30CM,
AB= 25Cm ,AF=?
IN DEF, E= 90, DE = 25 CM,
EF= 30 CM ,DC=?

9. A
B
C
E
D
F
25
cm
25
cm
BC = 30 CM
EF = 30 CM
BE = 44 CM

10. Step 5 : Now with the help of Pythagoras theorem,
in ABC; AB² + BC² = AC²
(25)²
(30)²
1525 =
39.05…

11. (25)²
(30)²
Step 6 : Now with the help of Pythagoras theorem, in DEF;
DE² + EF² = DF²
1525 =
39.05…

12. With the help of logarithmic table , ø can be
found out
• sin ø = opposite
hypotenuse
• sin ø = AB = sin 25
AC 39.05
• ø = 0.6402…
• ø = 39 48
• sin ø = opposite
hypotenuse
• sin ø = DE = sin 25
DF 39.05
• ø = 0.6402….
• ø = 39 48
The angles inclined at angle C &
angle F is 39 48 .

13. conclusions
• From the above observation, the both
the angles are of equal angles i.e. 39 48
• We get the distance from the top of
the tower & pyramid.
• A catapult is a device used to throw or
hurl a projectile a great distance
without the aid of explosive devices—
particularly various types of ancient and
medieval siege engines.

14. Presentation Made By –
krishma
Model MADE BY –
krishma, Honey & khyati
Presented By –
Shyam & Vikas