0

Guest

Courses New

hi plz help me out prove that 4 cos(360/7)cos(180/7) -1=2 cos(360/7)

hi plz help me out
prove that 4 cos(360/7)cos(180/7) -1=2 cos(360/7)

Grade:12

2 Answers

Ajay
209 Points
7 years ago
Are you sure that you have posted correct question.
When I calulate the LHS and RHS using claculator both sides are not equal
RHS = 0.335 and LHS = 0.793
Ankit Jaiswal
165 Points
7 years ago
Try it again and use degree instead of radian 
the question is correct i solved it using calulator

Think You Can Provide A Better Answer ?

Other Related Questions on Trigonometry

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More