for part (b) why does sin have to be used instead of tan or cos ?? - Ask.ManyTutors

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secondary 2 | Maths
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secondary 2 Maths

for part (b) why does sin have to be used instead of tan or cos ??

Date Posted: 7 years ago

Views: 558

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Lew Xin Ying

7 years ago

Hi, i think think it's because u does not know Length of AN. (Toa cah Soh remember?) So thus you only is able to use sine or cosines rule for non right angle triangle. Hopes this helps. :) cosines rule for non right angles triangle cannot be use as u does not know the length of CB

btsisgr8

Btsisgr8

7 years ago

thank u !!! :D

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Date Posted: 7 years ago

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btsisgr8

Btsisgr8

7 years ago

thank u !! :D