Home
Class 12
MATHS
Prove that cos 20^@ cos 40^@ cos60^@ cos...

Prove that `cos 20^@ cos 40^@ cos60^@ cos80^@=1/16`

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • STRAIGHT LINE

    MAHAVEER PUBLICATION|Exercise QUESTION BANK|55 Videos

  • VECTOR

    MAHAVEER PUBLICATION|Exercise QUESTION BANK|112 Videos

Similar Questions

Explore conceptually related problems

Prove that cos 20^(@)cos40^(@)cos60^(@)cos80^(@)=(1)/(16)

Prove that :cos20^(@)cos40^(@)cos60^(@)cos80^(@)=(1)/(16)

Prove that cos20^(@)cos40^(@)cos60^(@)cos80^(@)=(1)/(16)

Prove that: cos20^(@)cos40^(@)cos60^(@)cos80^(@)=(1)/(16)

cos 20^(@) cos 40^(@) cos 80^(@)=

Prove that cos 6^(@) cos 42^(@) cos 66^(@) cos 78^(@) =(1)/(16)

Prove that: cos20^(@)cos40^(@)cos80^(@)=1/8

Prove that: cos20^(@)cos40^(@)cos80^(@)=(1)/(8)

Prove that: cos80^(@)+cos40^(@)-cos20^(@)=0

The value of cos 20^(@) cos 40^(@)cos 60^(@) cos 80^(@) is equal to