Chapter 9+10+11

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Chapter 9+10+11 MCQ's from chapter 9, chapter 10 and chapter 11 mathematics book I

1. The equation of vertical asymptote of y=cosecx is:

A) x=0
B) y=0
C) x=pi
D) y=infinity

2. The period of the trigonometric function y=sin x cosx is:

A) 2 pi
B) pi
C) 4 pi
D) pi/2

3. The number of x-intercepts of y=sinx in its period

A) 0
B) 1
C) 2
D) 3

4. The domain of y=tanx is the set of real numbers except

A) x = npi
B) x=(2n+1)pi/2
C) x=n pi/2
D) x=(2n+1)pi

5. The trigonometric functions are continuous whenever

A) they are defined
B) their limit exist
C) their period is given
D) all are incorrect

6. A railway train is running on a circular track of radius 500 meters at the rate o0f 30 km/h. Through what angle will it turn in 1 sec.

A) 1/6 rad
B) 1/60 rad
C) 1/10 rad
D) 6 rad

7. If pi<@<3pi/2 then cos@+sin@ is always

A) negative
B) positive
C) negative or positive
D) 0

8. An arc AB of length 5 cm is marked on a circle of radius 3 cm the area of the sector

A) 7.5 cm^2
B) 7.5 m^2
C) 75 cm^2
D) 75 m^2

9. .

A)
B)
C)
D)

10. If a,b,c are the angles of a triangle ABC then cotacotb+cotbcotc+cotccota=

A) 3
B) 2
C) 1
D) 0