Let ein A=4/9, where 90<_A<_180, by considering the unit circle determine the exact value of cos(A). Please help with both 5 and 6!!!

30 in the diagram line e and made parallel to each other and line p and q are transversal. use properties of special angles formed by parallel lines and their transversals to find the missing angle measures. m< 3=65 m< 15=120 m< 7= m< 4= m< 6= m< 1= m< 16= m< 18= m< 21= m< 10= m< 11= m< 12=

If g(x) = x+1/ x-2 and h (x) =4 - x , what is the value of ( g*h) (-3)?

How to determine whether two known pairs of points are on the same line.