Math, asked by mukulgupta9972, 1 year ago

A pole being broken by the wind , the top struck the ground at an angle of 30˚ and at a distance of 21m from the foot of the pole. Find the total height of the pol

Answers

Answered by aniket2207
2
bro i am hindi medium isliya hindi main ans de ra hua

माना AC पोल है वह B से टूट कर D बिंदु पर है टूट कर जमीन से 30°का कोण बनती है
AB=BD (पोल का टूट हुआ भाग है)
CD पोल से D बिंदु की दुरी 21 cm
•°• tan30°=BC/CD
1/√3=BC/21
Cross multiple
21/√3=BC
BC=21/√3

either then,
•°• cos30°=CD/BD
√3/2. = 21/BD
CROSS MULTIPLE
BD√3=42
BD=42/√3

•°• POLE HEIGHT = BC+BD
AC = 21/√3+42/√3
L.C.M
=21+42/√3
=63/√3
नीचे √ नहीं चोर न चाहिए
•°• 63/√3 ×/√3/√3
=63√3/3
=21√3
•°• pole height is =21/√3 m.
Ans.


I HOPE I CAN HELP YOU

Answered by stpartha
0

Answer:

Step-by-step explanation:

tan 30=1/ root 3 =x/21

x=21/root3

cos 30=root 3/2=21/y

y=42/root3

total height=x+y=21/root3+42/root3

=>21 root 3 m

Attachments:
Similar questions