If cos∅6 = , ∅ and is in Quadrant IV, find the values of the other five trigonometric ratios of ∅.

Can someone pls ! pls answer all. no explanation needed..

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x,y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis