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(11) If the function : ( ) = + + , < 0 and the two roots of ( ) = 0
are 2 , -5 ,then the function is positive in ……….

(a) {−5,2} (b) − ]−5,2[ (c) ]−5,2[ (d) [−5,2]

(12) The solution set of the inequality: ( − 3)( − 4) < 0 in is …….

(a) {3,4} (b) ]3,4[ (c) [3,4] (d) R-[3,4]

°
(13) The angle of measure 2019 lies in the ……….. quadrant

(a) first (b) second (c) third (d) fourth
3
(14) If the length of an arc in a circle equals of its circumference, then the measure
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of the central angle subtending to this arc in degrees equals ………

o
o
o
o
(a) 30 (b) 67 30 \ (c) 135 (d) 240

(15) If = 2 − 2 , then = ………
4 4 6 4 3
(a) √3 (b) √2 (c) 2 (d) −1
2 2 √3 √2

2
(16) If ∈ ] , [ , = 12 , then the value of : sin − + = …
2 13
25 144 25 169
(a) (b) (c) (d)
169 169 144 25

°
(17) If (270 − ) = −1 where is the measure of the smallest positive angle,
2
then: = ……..°

(a) 30 (b) 150 (c) 210 (d) 330

°
°
(18) If ( +20 ° ) = ( +40 ° ) where 0 < < 90 , then: = ……..°
2 2
(a) 30 (b) 60 (c) 45 (d) 15

(19) If ( ) = 6 , then the range of the function is ……….

(a) [-6,6] (b) [-1,1] (c) [1,6] (d) ]-1,1 [
9
°
2
°
(20) If = 25 where 90 < < 180 , then the value of :
25 − 4 = ……..
(a) 23 (b) 17 (c) -17 (d) -23