HP HP-65 - Page 12

119
Cosine ([ prefix) / Arc Cosine ([ pre-
fix) (principal value, 0° < result < 180°
or equivalent in radians or grads). =
u m X
less than —1 or greater than 1 gives
error (blinking zero) for arc cosine. =
Bl See T1s.
120
Set Degree Angular Mode. = Affects angle
21
operations ([ ~0.s |, , , s
=), -
Delete Program Step. = With W/PRGM-
RUN switch in W/PRGM position, @
® deletes the program step denoted
by the program pointer (19), @ moves all
the following steps up one step, and @ in-
serts a @ code in the vacated bottom
position of memory. = Inoperative during
run mode, ( |8 [0t acts as €% ) = [§)
can be used to back up the pointer
(after which you reinsert the deleted
codes). = If memory is full (i.e., a minus
sign shows in display), 8 [DEL]loses bot-
tom memory step. = If the program
pointer is at the bottom (i.e., 2 minus
signs show in display), & deletes 2
locations. =