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It is written as cos6(t) - sin6(t) except that you use the symbol for theta instead of t. I have not tried inserting the theta symbol because this browser sometimes changes all characters to a Greek font.
The equation cannot be proved because of the scattered parts.
'csc' = 1/sin'tan' = sin/cosSo it must follow that(cos) (csc) / (tan) = (cos) (1/sin)/(sin/cos) = (cos) (1/sin) (cos/sin) = (cos/sin)2
The identity for tan(theta) is sin(theta)/cos(theta).
The fourth Across the quadrants sin theta and cos theta vary: sin theta: + + - - cos theta: + - - + So for sin theta < 0, it's the third or fourth quadrant And for cos theta > 0 , it's the first or fourth quadrant. So for sin theta < 0 and cos theta > 0 it's the fourth quadrant
The derivative of (sin (theta))^.5 is (cos(theta))/(2sin(theta))