Home
Class 11
MATHS
Prove that 16.Cos20^o . Cos40^o . Cos60^...

 Prove that `16.Cos20^o . Cos40^o . Cos60^o. Cos80^o = Sin^2 100^o + Cos^2 100^o`.

Promotional Banner

Topper's Solved these Questions

  • PRACTICE PAPER DESIGN - I

    CBSE COMPLEMENTARY MATERIAL|Exercise SECTION -C|8 Videos

  • PERMUTATIONS AND COMBINATIONS

    CBSE COMPLEMENTARY MATERIAL|Exercise Section - D(Long answer type question)|17 Videos

  • PRACTICE PAPER III

    CBSE COMPLEMENTARY MATERIAL|Exercise (Section-D)Long Answer Type-II|7 Videos

Similar Questions

Explore conceptually related problems

Prove that cos 20^@ cos 40^@ 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)

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

Prove that: cos100^(@)+cos20^(0)=cos40^(@)

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

Prove that: sin48o sec42o+cos480cos ec42o=2

Prove that: (cos18o)/(sin10o)+cos59o cos ec31o=2

Write the value of |sin20o-cos20osin70ocos70o| .