Page 158 - Math Grade 11 (Advance)

PROEUS DARA

"' tn cos<p cos<p -sin<p sin<p = cos(<p +<p )
2
2
1
1
2
1

r,:.( 37t . . 37t) ~!.. ( 47t . . 47t)
2 cos
z = AJL. 4 + rsm 4 ~w z = 2 cos 3 + zsm 3
1
2

t?iQlS z 1z 2 = AJ2 X 2 COS 4 + 3 + lSln 4 + 3
(37t 47t) . . (37t 47t)]
[
r,:.
r,:.( 257t .. 257t)
2 2 cos
= AJL. + zsm
12 12
r,:.( 257t . . 257t)
2 2 cos
z 1 z 2 = AJL. + rsm
12 12
ll1t . · l11t) ~!..
' ,.~_no~o 0 !.S.., 1 ~r.( 4 +zsm 4 ~'W z = AJO cos 8 +zsm 8
lOg(
37t .. 37t)
2 cos
,.,o,~u~~fjJ;du z = AJL.,
2
?irulSl z z '1
1 2
3
8
3
8
t?iQlS z 1z 2 = J2xJ8[cosC~7t+ 7t)+isinC~7t+ 7t)J
251t . . 257t)
= cos 8 +lsm 8
4(
153'