`cos10^0cos30^0cos50^0cos70^0`

Prove that: cos 10^0cos30^0cos 50^0cos 70^0=3/(16)

Prove that: cos 10^0cos30^0cos 50^0cos 70^0=3/(16)

The value of cos10^@ cos30^@ cos50^@ cos70^@ cos90^@ is: cos10^@ cos30^@ cos50^@ cos70^@ cos90^@ का मान है :

Show that cos10^o cos30^o cos50^o cos70^o =3/16

Prove the following : cos10^@.cos30^@.cos50^@.cos70^@ = 3/16

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

Prove that cos20^0cos40^0cos60^0cos80^0=1/(16)dot

Prove that: cos20^0cos40^0cos60^0cos80^0=1/(16)

Prove that cos20^0cos40^0cos60^0cos80^0=1/(16)dot

The value of cos^2 10^0-cos10^0cos50^0+cos^2 50^0 is equal to