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

Find the value of cos^2 17^@ -sin^2 73^@

If sin17^(@)=(a)/(b) then value of sec17^(@)-sin73^(@) is

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

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

Exact value of cos73^(@)+cos^(2)47^(@)-sin^(2)43^(@)+sin^(2)107^(@) is equal to:

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^(@)

Find the value of (2sin^(2)63^(@)+1+2sin^(2)27)/(3cos^(2)17^(@)-2+3cos^(2)73^(@))

If sin 17^@ = x/y ,then the value of sec 17^@ - sin 73^@ is

The value of (cos2^@ + sin2^@)/(cos2^@-sin2^@) is ___