[" 3.What is the value of "sin^(2)67^(@)-sin^(2)23^(@)?(2018)],[" Section "B(2" Mark) "]

What is the value of (cos^(2)67^(@)-sin^(2)23^(@))?

What is the value of (cos^2 67^@-sin^2 23^@) ?

What is the value of sin^2 25^(@) + sin^2 65^(@) ?

What is the value of sin^2 25^@ +sin^2 65^@ ?

What is the value of sin ^2 25^0+sin^2 65^0?

Find the values of sin67""1_(@)/2

What is the value of sin ^2 25 ^0+sin ^2 65 ^0?

Find the value of (sqrt(3) cos 23^(@) - sin 23^(@))/(2)

What is the value of the sin^(2) 6^(@) + sin^(2) 12^(@) + sin^(2) 18^(@) + "……" + sin^(2) 84^(@) + sin^(2) 90^(@) ?