Sine Low Ambiguous Cose Proctice

1. A triongulor plot of lond is el'1closed b~ 0 fel'1ce. Two Sides of the fence ore <::J.g m ondb.b m long. The other Side forms on ongle of 40. with the <::J.g m Side.

<,4c8 ~ l~o-t-2.1~ lO~f~~ ~

~.". <.. & -:: 1'20 - lLfO +- (01-, 't)'0": 32 ,Co

b _ ",ft,~ iY' 32. (p - ~I 'v1 t.fo

W -= '0, ~ 'bth 3)', ~

5i'Y) 4Db -:..,=>. 5 f'Y'1

\ -J .• I J~J {ot ~,'.1he -\1A (V d. 5(c.,u:... v<..n'"' UYL (Jii #uA Ot , CJ vY' (JV 5 f S-VY\ U

2. Solve eoch of the following triol'1gles:

0) 0 = 7.3 m, b = 14.b m, <A = 30.c.... r,3 < \If',b

_'. c,L1eOLV\~"'2>M-

Vt -;. \tt I (, ~ t't\ 30lI\=~I?:>m

V1 <: 1-,2-.".two ?olMi7JwJ

_ Id-I ~ 0

Z:__ - --:t,2-SlY, 12,~ 6))135

2: ~ 1-,2 Sm I)., B61y, :3.6

7= :.. 2. ~IM~

\11";.. q.3 s\)t) 35l1 :. J), 3yY1

\V(~k 2-2:-", < XY'l:. :;1~O -4'1, g

1,2 '~Ift.& tn's. ." 132. '2 <>- .,,---X .••. 'I -'. l::: I fb0 - ( :3S r/3 '2.7.- )

y

b) x = 72. ifni ~ = CJ.3 fnfn,<x = 35'

\ -:f..2-~'l,3,h .'. ett£ ciA..~ V\.el"8CA. -r

T1

2

_-rVi ONtO\e.

?/n'l ~1V73S--=---- ::- -q. ~ 9-,2-

y:; ';,1';- /5.330' 35"'l -=1-,:2- ")

y~ 4-'},<S0-'. c:; Q?,2

~ _ -= ..3:-' 2-~), ~T-, 2. ~/'n -3S

'2: :; 1-,2- StV\ 41-,2- ----51Y> 3 5

? :::.1;L. 5VY1~

ltl ~ 2. ~ 'om 33VJ:; I.S

Extro Proctice(option~1)

A lighthouse~t paint L is 10 km from ~~~cht ~t paint Y ~nd8 km from ~s~i1bo~t~tpaint S. Fromthe ~~cht,the lighthouse~ndthe S~i(bo~t~re sep~rotedb~~n~ngleof48', Determinethe dist~\'Icefrom the ~~cht to the s~i(bo~t,to the ne~rest tenth of ~kilometre.

? t..f ~ B~'. 2 soL.un'tJT\S

~ = (0 ~1'y)ll-8

h -= t-.Lf-B < lo.: ct1ec LL-

lIle'';5h.tL

S IVl'MfllL 2-L-

l ~ Ys L-::-leo-t:,~.3 ~.I. ,

-::lll.1-°~

SiV\ S _~in 4- 'l3 l ~l

(o~, ~ 6S,o'B 'I ------

L-::: \«2xJ -(LfB Til I.:)to s .- .s ;'v)-'('o &ln4'2.) Q

- .5>, - L-= 2,0.3-- - 6

S -:;0B, 3 0 ~ - 13---~,n2-0.3 binlf80

'" . L- -= ~ 3.f- J2~ B sl-n20.3.

~cg ?lv1lfg

-- 0,'n4-<6 J2~ 3.f-~5Ih~~.r

y~ e si'vl (,3.1--Sin q..s " ~ scc,;llooo. + ts eA~

• 0

J--;. q,1- Kf/V\ C) • '"f lc.- V'Y"' C5l 3y7-~

~-lW jadAi