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Mathematics 9 Online
OpenStudy (anonymous):

can someone help me with number 2 ?

OpenStudy (anonymous):

hartnn (hartnn):

in this case OPPOSITE side of angle 61 is given so which ratio will u use ? sin or cos ?

hartnn (hartnn):

or tan ?

hartnn (hartnn):

i mean opposite side is to be "found ", adjacent side is given, which ratio has opposite side and adjacent side ?

hartnn (hartnn):

sin = opposite/hypotenuse cos = adjacent/ hypotenuse tan = opposite/ adjacent

OpenStudy (anonymous):

sin?

hartnn (hartnn):

sin has hypotenuse in it, which you don't have value of..

OpenStudy (anonymous):

hm...

hartnn (hartnn):

what about tan ?

OpenStudy (anonymous):

yess

OpenStudy (anonymous):

cuz we dont have a hypotemnuse

hartnn (hartnn):

right, tan 61 = opposite side/ adjacent side = .... ? can you find opposite side and adjacent side of angle 61 ??

OpenStudy (anonymous):

so 150*tan61?

hartnn (hartnn):

yes! tan 61 = w/150 w = 150 tan 61 = ....

OpenStudy (anonymous):

270 or 1.8???

hartnn (hartnn):

270.6

OpenStudy (anonymous):

alrighty lol

hartnn (hartnn):

:)

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