Home
Class 14
MATHS
[359.,cos^(2)10^(@)+cos^(2)50^(@)+cos^(2...

[359.,cos^(2)10^(@)+cos^(2)50^(@)+cos^(2)70^(@)=?],[[" (a) "(1)/(2)," (b) "1],[" (c) "(3)/(2)," (d) "2]]

Promotional Banner

Similar Questions

Explore conceptually related problems

sin^(2)50^@+cos^(2)50^@=?

cos 10^(@) cos 30^(@) cos 50^(@) cos 70^(@) =

cos10^(0)cos30^(0)cos50^(@)cos70^(0)

cos^(2)10^(@)+cos^(2)50^(@)-cos10^(@)cos50^(@) is equal to

cos^(2)20^(@)+cos^(2)70^(@) is equal to :

cos 10^(@) cos 30^(@) cos 50^(@) cos 70^(@) =(3)/(16)

cos^(2)5^(@)+cos^(2)10^(@)+cos^(2)15^(@)+..+cos^(2)355^(@)

cos^(2)5^(@)+cos^(2)10^(@)+cos^(2)15^(@)+.....+cos^(2) 90^(@)=

sin ^2 50^@+cos ^2 50^@ =?

Prove that cos10^(@)cos30^(@)cos50^(@)cos70^(@)=(3)/(16)