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

State weather each of the following statements is true or false : The value of cos^(2)23^(@)-sin^(2)67^(@) is positive.

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^(@)+sin2^(@)+sin3^(@)+...+sin89^(@)))/(2(cos1^(@)+cos2^(@)+...+cos44^(@))+1) equals

If sin A + sin^2 A = 1 , then the value of the expression (cos^2A+ cos^4 A) is

Find the value of the expression sin[cot^(-1){cos (pi/2)}]

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 cos^(6)theta+sin^(6)theta+3sin^(2)theta cos^(2)theta=

find the value of expression (sin2x)/(1+cos2x) is: