Page 82 - Math Grade 11 (Basic)

PROEUS DARA

"'
391tnUU1

sin 135° = sin(l80°- 45°) = sin45o = J2
2

0 I 0 ~ '?
illUTH'l l!i~ f:Hlfl m 6'1 t'ii! b ru ~H 2 n t 2Jl'i:3
A= cos(-8)+sinG 8)+cos(rt-8)+sin(~rt+8)

. 5rt 3rt . ( rt) '1
B = sm + cos + sm - 6
6 4
A = cos e + cos 8 - cos 8 - cos e = o '1
. ( rt)
. 5rt
. (
(
. rt
B = sm + cos 3rt + sm - = sm rt - rt) + cos rt - rt) - sm
6 4 6 6 4 6
"" ""
i,i;~i;~ 1 i:thtiHt.flrn sin4r = 0.6820 J:Hl..flm cos43°
R
i,i;ii;i 2 an&'lt'ii! t ru2 &s nr; 2Jl'i:3 A = sin( -x) + sin(rt- x) + cos(rt x) + sinG x)
5 5rt 7n I
B = sin( rt -x) + cos(3rt x) C = tan-+ cot-+-- '1
2 6 4 tan~
3

-->
0 "" --7 "" --7
Qtll~~L&ll:nHlil'i:!llftl!i'i:flS (OA , OP) = 8 Stl (OA , ) = rc+8 tl!iQlS
I
':1 0 q ':1 0
nHH1:ht21:2tHl..flti P(cos8, sin8) SbnHH1:hi:St2tiru1ti P'cos(n+8), sin(n+8) '1
U I U I

y

tl!iQlS sin(rt+8) = sin[rt (-8)] = sin(-8) = -sin8

cos(n + 8) = cos[rt (--8)] = -cos(-8) = -cos8
x' X
,.,.+tl) __ sin(n+B) -sin8
tan( '" = -- = tan8
cos(rt + 8) -cos8
cot(n + 8) = cos(n + 8) -cos8 = cot8 '1 y'
sin(n+8)- -sin8'

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