badge image

Enroll For Free Now & Improve your performance.

×
User Icon
User Icon
User Icon
User Icon
User Icon

Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
Close

MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

⇐ BackProceed to Checkout ⇒
There are no items in this cart.
Continue Shopping
Menu
Grade: 12th pass 

                        
In an equilateral triangle, 3 coins of radii I unit each are kept so that they touch each other and the sides is the triangle. Find the area of the triangle.
2 years ago

Answers : (1)

Eshan
askIITians Faculty
2095 Points 
							568-2194_123.png
From figure, side of the equilateral triangle= 2r
where r is the radius of each coin.

From trignometry, the side AD=2rsin60^{\circ}=\sqrt{3}r
Therefore, area of the triangle=\dfrac{1}{2}\times base\times height=\dfrac{1}{2}\times 2r\times \sqrt{3}r=\sqrt{3}r^2=\sqrt{3}
2 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Other Related Questions on Trigonometry

satify the equation of the lines cos 2 x-sinx+5=0 4cosx+secx-4=0 Answer & Earn Cool Goodies
please help me in prove that costheta+cosphi/sintheta+sinphi=sintheta-sinphi/cosphi-costheta Answer & Earn Cool Goodies
41,37,29 So please give me this question solution Please explain the answer step by step
Given that right angled triangle PQR angle Q= 90deg Angle p=25.3deg and QR= 7.4Cm calculate the...
thnx +tan3x=2tan2x find general solution. Please give me ans. Please give me ans
View all Questions »


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 31 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers To Win!!! Click Here for details