review exercise 40 (subjective)

8/18/2019 Review Exercise 40 (Subjective)

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Review Exercise 40

Subjective Questions

1. State tan θ in each of the following diagrams.

(a) (b)

(c) (d)

2. In the following diagrams, find the value of tan θ.

(a) (b)

(c) (d)

3. Calculate the value of θ in the following diagrams.

(a) tan θ = 0.9 (b) tan θ =!

(c) tan θ ="

(d) tan θ = #.$

© Pearson Malaysia Sdn. Bhd. 2008 Essential Mathematics PMR1


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Review Exercise 40

4. Calculate the value of sin θ correct to four decimal %laces.(a) (b)

(c) (d)

5. In the following diagrams, determine the length of y.

(a) sin θ =!

&(b) sin θ =

$

(c) sin θ = 0.' (d) sin θ =9

6. ind the value of cos θ correct to four decimal %laces.(a) (b)



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Review Exercise 40

(c) (d)

7. Calculate the length of z in the following diagrams.

(a) cos θ =$

#(b) cos θ =

&

$

(c) cos θ = 0." (d) cos θ = 0.9

8. Co% and com%lete the table below.

tan θ sin θ cos θ

!

&

#&

#'

#

9.

In the diagram, sin x* =$

$!. ind the length of HK .



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Review Exercise 40

10.

In the diagram, find the value of tan x*.

11.

In the diagram, cos x* =#'

#. ind the value of tan x*.

12. ind the value of each of the following.(a) tan $&* (b) sin "+*(c) cos #."* (d) tan '9.$*

13. ind the angle x, in degree, such that 0* x 90*.(a) tan x = #.$9!(b) sin x = 0."'!&(c) cos x = 0.9!""(d) sin x = 0.''!9

14. Calculate the value of x in the following. -ive the answer in degree and minute.

(a) tan x = $!

#(b) sin x =

&

(c) cos x =#0

9(d) cos x =

#+

'

15. Calculate the values of x and y. -ive the answers correct to two decimal %laces.

(a) (b)

(c) (d)



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Review Exercise 40

16. In the following diagrams, calculate the values of x and θ.(a) (b)

(c) (d)

17.

In the diagram, P , Q and R are %oints on the ban s of a river. If QR = ! m and theangle ∠ PRQ = 0*, calculate the width of the river. -ive the answer correct totwo decimal %laces.

18.



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Review Exercise 40

In the diagram, OP is a cable used to su%%ort a tele%hone %ole. If PQ = ' m,calculate the length of the cable. -ive the answer correct to two decimal %laces.

19.

/he diagram shows a light house of height # m that is built on a cliff of height! m from the sea level. Calculate the angle θ, in degree and minute.

20.

/he diagram shows a ladder that is leaning against a wall. Calculate the angle made

b the ladder with the floor. -ive the answer correct to the nearest degree.


review exercise 40 (subjective)

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