The value of `cos^2 10^0-cos10^0cos50^0+cos^2 50^0` is equal to `4/3` (b) `1/3` (c) `3/4` (d) `3`

The value of cos^(2)10^(0)-cos10^(0)cos50^(@)+cos^(2)50^(@) is equal to (4)/(3)(b)(1)/(3)(c)(3)/(4)(d)3

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

The value of cos^(2)10^(@)-cos10^(@) cos 50^(@) + cos^(2) 50^(@) is

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

Write the value of cos1^(0)+cos2^(0)+cos3^(0)++cos180^(@)

If cos25^(0)+sin25^(0)=K, then cos50^(@) is equal to

The value of cos52^(0)+cos68^(0)+cos172^(0) is 0 b.1 c.2 d.3/2

The value of cos1^(0)cos2^(0)cos3^(0)cos179^(@) is 1/sqrt(2) b.0 c.1 d.-1

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^(@)