Page 79 - Math Grade 11 (Basic)

PROEUS DARA

2 2
·~1':"1"' sin 8 + cos 8 1 ~~ 2 '1
+
bHLt•"" ---=--- = -?- ~ tan 8 1 =
cos cos -8 cos

I
I
1 + tan 8 = -- 1 + cot 8 = --
2
2
cos28 sin28
. 8 "' 0 '?!!
t1 llil Sl cos 8 , tan 8 , cot 8 t 111 ru f1[1 ru sin 8 = 2 b ~ 8 ~ 24 fflLi:J b l1 l '1
17

0 • 0 5 sin a+ 7 cos a 4
n-h ·~~~ J.o <-!-.
nn.rrH1t1~ b w 1 u.; w w u 1 tan a = '1
Ul 6cosa- 3 sin a 15
4 4
5sina + 7cosa = cosa(5tana + 7) _ 5tana + 7 5 X 15 + 7 = _3_+_7 125 '1
6cosa-3sina cosa(6-3tana) 6-3tana 4 4 78
6 3x- 6--
15 5
!'-!-~ • . 12 "'J.o 3:rt
t1 llil Sl cos a , tan a , cot a tw,rutt1t\llru sma--- Sw - <a<2Jt
A - 3 2
R llil Sl cot a+ tan a
cot a- tan a

cfiQJ " 0 <1:11
3.2 H~~tH~lJHfiU1.11Y1UHS1:f e a~ e + 2bt
ti11ru'f18 Sb 8+2k:rt ; kEZ m'f1~M6hi11ru1139a y
I l 1

sin(8 + 2k:n:) = sine cos(8 + 2k:rt) = cos8 X
tan(e + 2k:n:) = tane cot(8 + 2k:n:) = cote ; k E Z

tan(8 + k:n:) = tane cot(e + krc) = cote , k E Z

1 :rt 1
sin~:n: = sin(i + 4n) = sini = 1 , cos(- ; :n:) = cosG- 6:n:) = cos - z '1
3
0 • 0 J2
:rt
( 39)
. :rt
65:rt "'
'l"lJ.o<"h
ruun:1t1~ tt1~:~wu1 cos- = sm- = - '1 t1llilSl cos- Glb sin -- '1
ll 4 4 2 4 4

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