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Mathematics 7 Online
OpenStudy (elisaneedshelp):

Please Help me do # 22 and 24 Missing lengths/Trigonometry stuff

OpenStudy (elisaneedshelp):

OpenStudy (nikato):

Ok. So 22 What is side x in relation to the m<60

OpenStudy (elisaneedshelp):

Hypotenuse

OpenStudy (jdoe0001):

ElisaNeedsHelp in 22 and 24... there seems to be a missing side. ... what do you think it's?

OpenStudy (elisaneedshelp):

x and y are both missing and idk

OpenStudy (elisaneedshelp):

very clueless

OpenStudy (nikato):

Correct. It is the hypotenuse. What about the side with length 9?

OpenStudy (jdoe0001):

well, yes... let's take a poke at 22 what do you think is the missing angle in it?

OpenStudy (jdoe0001):

|dw:1394920620985:dw|

OpenStudy (elisaneedshelp):

opposite

OpenStudy (elisaneedshelp):

30*

OpenStudy (jdoe0001):

right.... so let's take a look at 24 notice the missing angle |dw:1394920743571:dw|

OpenStudy (jdoe0001):

so both cases, 22 and 24 are cases of the 30-60-90 rule -> http://upload.wikimedia.org/wikipedia/commons/4/45/30-60-90_triangle.jpg <--- notice the ratios

OpenStudy (elisaneedshelp):

yes

OpenStudy (jdoe0001):

|dw:1394920890927:dw|

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