The value of `4(cos^(2)73+cos^(2)47+cos73*cos47)`

The value of cos^(2)17^@-sin^(2)73^@ is

The values of cos^(2)73^(0)+cos^(2)47^(0)-sin^(2)43^(0)+sin^(2)107^(0) is equal to: ( b) (1)/(2)(c)(sqrt(3))/(2) (d) sin^(2)73^(@)+cos^(4)73^(@)

The value of cos^(2)75^(@)+cos^(2)45^(@)+cos^(2)15^(@)-cos^(2)30^(@)-cos^(2)60^(@) is

The value of cos1^(@)cos2^(@)cos3^(@)...cos179^(@) is

The value of cos1^(@)cos2^(@)cos3^(@)…cos180^(@) is

What is the value of cos1^(@) cos2^(@)cos3^(@).....cos270^(@) ?

What is the value of cos46^(@)cos47^(@)cos48^(@)cos49^(@)cos50^(@)...cos135^(@) ?

If sinA+sin^(2)A=1 , then find the value of cos^(12)A+3cos^(10)A+3cos^(8)A+cos^(6)A+cos^(4)A+cos^(2)A .

The value of cos^(2)17o-sin^(2)73o is (a) 1 (b) (1)/(3) (c) 0(d)-1

Find the value of cos1^(@).cos2^(@).cos3^(@).cos90^(@)