" 2.The value of the expression "(cos^(2)23^(@)-sin^(2)67^(@))=0

State True or False: The value of the expression (cos^(2)23^(@)-sin^(2)67^(@)) is positive.

The value of the expression (cos^(2)23^(@)-sin^(2)67^(@)) is positive.

The value of the expression (tan^(2)20^(0)-sin^(2)20^(@))/(tan^(2)20^(0)+sin^(2)20^(@)) is

The value of the expression (2(sin1^(@)+sin2^(@)+sin3^(@)+...+sin89^(@)))/(2(cos1^(@)+cos2^(@)+...+cos44^(@))+1) equals

The value of the expression cos^(6)theta+sin^(6)theta+3sin^(2)theta cos^(2)theta=

The value of the determinant Delta=|{:(sin^(2)23^(@)" "sin^(2)67^(@)" "cos180^(@)),(-sin^(2)67^(@)" "-sin^(2)23^(@)" "-cos180^(@)),(cos180^(@)" "sin^(2)23^(@)" "sin^(2)67^(@)):}| is

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

The value of the expression (2(sin1^(0)+sin2^(0)+sin3^(0)+...+sin89^(@)))/(2(cos1^(0)+cos2^(0)+...+cos44^(0))+1) equals

The value of the expression sin^(6)theta+cos^(6)theta+3sin^(2)theta*cos^(2)theta equals