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Example
The trigonometry keys, f, g and h, are multi-tap keys.
The angle of depression from a drone flying
. Find the horizontal distance from the drone to the buoy. Give your answer correct to
one decimal place.
Keystrokes and solution:
The angle mode is DEG.
and so
and press k.
Enter
Press h and enter
Press t > > 1 and enter
Press t > > 2 ) n.
The horizontal distance is
correct to one decimal place.
Note: Press w ] ] > > n to set
the decimal notation mode to a one
decimal place output. FIX is displayed as
an indicator at the top of the screen.
Example
Use the TI-30X Plus MathPrint™ to convert
(a)
in terms of .
(b)
correct to four decimal places.
Keystrokes and solution:
The angle mode is RAD.
[Press w > n to be in radian mode.]
(a)
and press t > > 1.
Enter
25
and press t > > 2 n.
Enter
85π
=
35 25
432
(b)
Press c and so
100
x =
tan 23 18
.
.
metres,
=
35 25
0.6181
(4 dp).
metres above the water to a buoy at sea is
35 25
to radians. Give your answer
18
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