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Mathematics 9 Online
OpenStudy (help_people):

In △JKL, solve for x. Triangle JKL where angle K is a right angle. KL measures 34. JL measures x. Angle J measures 27 degrees. 66.73 74.89 15.44 38.16

OpenStudy (help_people):

OpenStudy (wcrmelissa2001):

it's tan cos and sin. Just identify the appropriate sides and solve! Tell me if you need more detailed explanation :D

OpenStudy (help_people):

yes pleases

OpenStudy (wcrmelissa2001):

ok I'm just gonna assume you know the basics of tan, cos and sin. you know that KL is 34. So you need to use one of these 3 (tan cos and sin) which involves both the x side and KL side. Your reference angle is Angle JKL which is 27˚.From this reference point, X is the hypotenuse and 34 is the opposite side. So which one (tan cos or sin) uses both hypotenuse and opposite side? Tan. So you basically get Tan 27˚=34/x From there calculate and you'll get x Hope this helps

OpenStudy (help_people):

ok, thank you I will calculate and tell you my asnwer to make sure it's correct

OpenStudy (help_people):

Is it 74.89?

OpenStudy (wcrmelissa2001):

no... wait let me recalculate. Maybe it's me who's wrong

OpenStudy (wcrmelissa2001):

OH MY IM SO SORRY. I used the wrong one. It shouldn't be tan. It should be sin

OpenStudy (wcrmelissa2001):

yes you are right (sorry about that)

OpenStudy (er.mohd.amir):

sin J =LK/KJ sin 27=34/x x=34/sin 27

OpenStudy (help_people):

weird that I got it right.. I must have used the right one

OpenStudy (help_people):

oh ok thank you @Er.Mohd.AMIR

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