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10&10a

6.03 Degrees, minutes, and seconds

Worksheet
Degrees, minutes and seconds
1

Round the following to the nearest degree:

a

42 \degree 24\rq

b

49 \degree 55\rq

c

99 \degree 40\rq

d

108 \degree 29\rq

2

Round the following to the nearest minute:

a

40\degree 18\rq 6\rq\rq

b

31\degree 23\rq 40\rq\rq

c

80\degree 23\rq 10\rq\rq

d

92\degree 50\rq 35\rq\rq

3

Convert the following as indicated:

a

82\degree 30\rq 37\rq\rq to degrees, correct to two decimal places.

b

45.5\degree to degrees and minutes

c

38.38 \degree to degrees, minutes and seconds.

4

Find the value of each of the following:

a

71 \degree 39\rq + 42 \degree 12\rq

b

23 \degree 51 \rq + 11 \degree 17\rq

c

64 \degree 51\rq - 54 \degree 17\rq

d

83 \degree 22 \rq - 27 \degree 38 \rq

e

111 \degree 18 ' - 49 \degree 46 '

f

90\degree - 13\degree 36\rq 42\rq\rq

g

90\degree - 69\degree 39\rq 22\rq\rq

h

85 \degree 29' 43''- 56 \degree 13' 18''

5

For each of the following, find the acute angle \theta, rounded to the nearest minute:

a

\sin \theta = 0.3168

b

\tan \theta = 2.897

c

\cos \theta = 0.8267

d

\tan \theta = 3.749

Unknown sides and angles
6

Consider the following triangle:

Evaluate \theta, rounding your answer to the nearest minute.

7

Find the value of the pronumeral in the following triangles, correct to two decimal places:

a
b
c
d
8

For the following triangles, find the angle \theta to the nearest minute:

a
b
c
d
9

Consider the following triangle:

Find the value of x:

a

In degrees, correct to two decimal places.

b

To the nearest minute.

10

For the following triangles, find the value of x:

i

Correct to four decimal places.

ii

To the nearest second.

a
b
Applications
11

During a particular time of the day, a tree casts a shadow of length 24\text{ m}. The height of the tree is estimated to be 7\text{ m}.

Find the angle \theta, formed by the length of the shadow and the arm extending from the edge of the shadow to the height of the tree. Round your answer to the nearest minute.

12

During rare parts of Mercury and Venus' orbit, the angle from the Sun to Mercury to Venus is a right angle, as shown in the diagram. The distance from Mercury to the Sun is 60\,000\,000\text{ km}. The distance from Venus to the Sun is 115\,000\,000\text{ km}.

What is the angle, \theta, from Venus to the Sun to Mercury? Round your answer to the nearest minute.

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