Degree Û Radians - Casio FX-82AU PLUS Using Manual

Remember!
The small c in the expression
degrees to radians, or the reverse, you must have the calculator set on the measure you
are changing into. The button pressing sequence for degrees Û radians and changing
degrees into degrees and minutes is on page 11.
Note! The only times when the degrees or radians setting is relevant is when you are
converting between degrees and radians or when you are going to press one of the j
k or l buttons.
p
1 Express radians in degrees.
4
0
2 Convert 30 into radians, correct to 3 decimal places.
p
3 Express radians in degrees.
5
0
4 Convert 55 30 into radians. Express your answer correct to 3 decimal places.
c
5 Express 1.8 in degrees, correct to the nearest minute.
6 Determine the following values correct to 3 decimal places.
c
A tan1.6
7 Determine the value of
2
1
8 Evaluate
r
2
to 2 decimal places.
9 Solve the equations for
places.
q
A sin = 0.4
10 Determine the value of
correct to 3 decimal places.
11 Calculate the value of
your answer correct to 4 decimal places.
12 Determine the positive solution for p in the equation
2 2
p = 4.8 + 7.3
Answers
c
0
2 0.524
1 45 3 36
7 38.912 8 5.66
© Sue Thomson and Shriro Australia PTY Limited. This page may be photocopied for classroom use.
Degrees Û Radians
c
1.4 means radians. When you want to change from
'
c
B cos1.2
2
1
r q when r = 6.4 and
2
( )
q q when r = 11.7 and
- sin
q , £ £ . Express each answer correct to 3 decimal q
0
q
B cos = 0.128
q q p
, 0 < <
a , 0 < a < , in the equation
2
- ´ 2 4.8 7.3 cos1.9 ´ ´
0 c
4 0.969
5
c
9A 0.412 B 1.442
C sin 54 28
c
q = 1.9
c
q . Express your answer correct
= 0.8
p
2
q
C tan =
2
5 + 6.2
q
for cos =
2 5 6.2 ´ ´
p
sin
2
c
. Answer correct to 1 decimal place.
0 '
103 8 6A 34.233 -
c c
C 1.039 10 2.20
0 '
.
1.7
2 2
- 10
. Express your answer
c
9 sin 0.7
a
= . Express
10
B 0.362 C 0.814
c c
11 0.6185 12 9.9
28