" (1) "45,30

Represent graphically the displacement of (i) 45km30^(@) east of north,

Write the supplement of each of the following angles: 83^(@) 45'30''

Find the standard deviation of the following set of numbers: 25, 50, 45, 30, 70, 42, 36, 48, 34, 50

State (a) if the fractions are in ascending order state (b) if the fractions are in descending order , else state (c) 30/45 , 30/50 , 38/80

Reduce (-45)/30 to the standard for

Reduce (-45)/(30) to the standard for

If A and B are acute angles such that 2 cos A*cot B-2cos A-cot B+1=0, "then" : (A,B)-= A) (45^(@),60^(@)) B) (60^(@),45^(@)) C) (30^(@),60^(@)) D) (45^(@),30^(@))

The direction angles of a straight of a straight line are 120^(@), 45^(@), 30^(@) . Is the statement true? Give reasons for your answer.

Additional Bits : 4.5 : 3.0 = _____________ .