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Mathematics 9 Online
OpenStudy (scarlettthecamel):

***MEDAL, FAN AND TESTIMONY TO BE REWARDED!***

OpenStudy (scarlettthecamel):

OpenStudy (anonymous):

use trigonometry!

OpenStudy (anonymous):

in first use \[\sin \theta =\frac{ opposite side }{ hypotenuse }\] for second \[\cos \theta= \frac{ adjecent side }{ hypotenuse }\]

OpenStudy (anonymous):

now you have angle and side,put values and find the answers

OpenStudy (scarlettthecamel):

okay thanks!

OpenStudy (anonymous):

welcome ^^

OpenStudy (scarlettthecamel):

so i do 5.2*sin/61

OpenStudy (anonymous):

that angle is 61? \[hypo = \frac{ 5.2 }{ \sin61 }\]

OpenStudy (scarlettthecamel):

so what do i type into my calculator?

OpenStudy (anonymous):

5.2 divided by sin 61 in degrees

OpenStudy (anonymous):

dont calculate sin in radians

OpenStudy (scarlettthecamel):

okay

OpenStudy (anonymous):

do the 2nd in similar way using cos instead of sin

OpenStudy (scarlettthecamel):

OpenStudy (scarlettthecamel):

what have i done wrong

OpenStudy (scarlettthecamel):

@aajugdar

OpenStudy (anonymous):

remove the bracket?

OpenStudy (scarlettthecamel):

did i forget to add a bracket at the end

OpenStudy (scarlettthecamel):

i can't it comes up on that calc

OpenStudy (anonymous):

okay then put bracket at end

OpenStudy (scarlettthecamel):

i got 5.95 witht the bracket at the end

OpenStudy (anonymous):

sounds correct now find 2nd

OpenStudy (scarlettthecamel):

okay, thanks very much for your help it has helped alot

OpenStudy (anonymous):

:)

OpenStudy (anonymous):

in the second hypo= .5/cos(25)

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