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Mathematics 9 Online
OpenStudy (anonymous):

L

OpenStudy (anonymous):

Answer is 22.64? sin 68= 22.64/21 therefore sin 68 equals 0.9272

OpenStudy (anonymous):

Could I get help?:)

OpenStudy (anonymous):

@Er.Mohd.AMIR

OpenStudy (anonymous):

Hey, are you there?:)

OpenStudy (er.mohd.amir):

tan 68=x/21

OpenStudy (anonymous):

oh its tan?

OpenStudy (anonymous):

2.4751 is tan 68

OpenStudy (er.mohd.amir):

tan A=perpendicular/base

OpenStudy (anonymous):

51.98?

OpenStudy (er.mohd.amir):

yes

OpenStudy (anonymous):

How to know if a questions needs tan. sin or cos? I get confused sometimes thanks!!!

jhonyy9 (jhonyy9):

sin not can using bc you dont know the hypothenuse

OpenStudy (anonymous):

? you use tan to find hypotenuse

OpenStudy (er.mohd.amir):

first check what is given then use tric ratio

jhonyy9 (jhonyy9):

not tan say opposite divide adjacent

OpenStudy (anonymous):

whats sin, opp/hyp?

jhonyy9 (jhonyy9):

tan 68 = opp. / adjacent tan 68 = x/21

OpenStudy (anonymous):

cos is adj/hyp

jhonyy9 (jhonyy9):

opp opposite side hyp is hypothenuse adj is ajacent side

jhonyy9 (jhonyy9):

adj is adjacent side - sorry

OpenStudy (anonymous):

So Sin=opp/hyp, cos=adj/opp, tan=opp/adj

jhonyy9 (jhonyy9):

cos = adj/ hyp.

OpenStudy (anonymous):

oops yeha sin =opp/hyp, cos=adj/hyp, and tan=opp/adj

jhonyy9 (jhonyy9):

yes

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