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MARI ANOMARCOSSTATEUNI VERSI TY Col l egeofTeac herEduc at i on WORKSHEET#12 SI NELAW [ CASE1] Name:VI LORI A, CATHERI NEB. Sec t i on:MATH1A
Obj ec t i ves : 1. Tos ol veanobl i quet r i angl egi vent woangl esandones i de. 2. Toappl yt hes i nel awt owor dpr obl ems . Conc ept s : 1. TheLawofSi nes :I nanyt r i angl e, t hes i desar epr opor t i onalt ot hes i nesoft he oppos i t eangl es . 2.Thepar t sofanyobl i quet r i angl ec oul dbec omput edus i ngt hef ol l owi ng f or mul as : a b c = = s i nA s i nB s i nC
s i nA s i nB s i nC = = a b c
Appl i c at i on: Cal c ul at ewhati sas ked. I l l us t r at ewhenevernec es s ar y.
Cas t r oAve. , LaoagCi t y, 2900I l oc osNor t e, Phi l i ppi nes c t e@mms u. edu. ph
( 077)6002014
www. mms u. edu. ph
MARI ANOMARCOSSTATEUNI VERSI TY Col l egeofTeac herEduc at i on 1. Fi ndt hemi s s i ngpar t soft hef i gur est hatf ol l ow:
Cas t r oAve. , LaoagCi t y, 2900I l oc osNor t e, Phi l i ppi nes c t e@mms u. edu. ph
( 077)6002014
www. mms u. edu. ph
MARI ANOMARCOSSTATEUNI VERSI TY Col l egeofTeac herEduc at i on
2.J ayl or d’ s( J )andEugene’ s( E)hous esar eal ongt her i ver banks .Ont heoppos i t ei s Reymar ’ s( R)hous e, whi c hi s275mawayf r omEugene’ s . Thel i net hatc onnec t st he hous esofReymarandEugeneandt hel i nec onnec t i ngt hehous esofReymarand J ayl or df or m 15° .Mor eover ,t hel i net hatc onnec t st hehous esofReymarand J ayl or d,andt hel i nec onnec t i ngt hehous esofEugeneandJ ayl or df or m 49° .Fi nd t hedi s t anc ef r omJ ayl or d’ shous et ot hatofReymarandofEugene’ s . Cas t r oAve. , LaoagCi t y, 2900I l oc osNor t e, Phi l i ppi nes c t e@mms u. edu. ph
( 077)6002014
www. mms u. edu. ph
MARI ANOMARCOSSTATEUNI VERSI TY Col l egeofTeac herEduc at i on
3. Apar ki si nt hes hapeofanobl i quet r i angl e. Fr omt wopoi nt s , t hec omput edangl es ar e45°and75° ,r es pec t i vel y.I ft hes i deoppos i t et he45°i s280m l ong,howl ong ar et hes i desoft hepar k?
Cas t r oAve. , LaoagCi t y, 2900I l oc osNor t e, Phi l i ppi nes c t e@mms u. edu. ph
( 077)6002014
www. mms u. edu. ph
MARI ANOMARCOSSTATEUNI VERSI TY Col l egeofTeac herEduc at i on 4. Themeas ur esoft wooft heangl esofat r i angl ear e50°and55° . I ft hes i deoppos i t e of50°angl emeas ur es17c m, f i ndt hemeas ur ementoft heot hers i des .
5.As i deofat r i angl ei s35m l ongandf or msangl esof34°and43°wi t ht hes i des . Fi ndt hel engt hoft hes i des .
Cas t r oAve. , LaoagCi t y, 2900I l oc osNor t e, Phi l i ppi nes c t e@mms u. edu. ph
( 077)6002014
www. mms u. edu. ph
