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Mathematics 13 Online
OpenStudy (divinexxchocolatexx):

Will someone help? I'm am clueless on where to start. Pics included. I WILL FAN AND MEDAL!!

OpenStudy (divinexxchocolatexx):

OpenStudy (peachpi):

are you familiar with sin, cos, and tan ratios (SOHCAHTOA)?

OpenStudy (divinexxchocolatexx):

Yes

OpenStudy (peachpi):

OK, so you're given angle x and the hypotenuse, and you're trying to find the side adjacent to angle x, which trig function would you use?

OpenStudy (divinexxchocolatexx):

tan

OpenStudy (peachpi):

no. you have the hypotenuse and want to find the adjacent. which one uses hypotenuse and adjacent? \[\sin x° = \frac{ opposite }{ hypotenuse }\] \[\cos x° = \frac{ adjacent}{ hypotenuse }\] \[\tan x° = \frac{ opposite }{ adjacent}\]

OpenStudy (divinexxchocolatexx):

oh sin

OpenStudy (peachpi):

no cos x° = adjacent/hypotenuse your hypotenuse is y, so the equation is cos x° = adj/y

OpenStudy (divinexxchocolatexx):

oh

OpenStudy (peachpi):

that's the equation you'd use to solve for the missing distance

OpenStudy (divinexxchocolatexx):

sorry to ask but can you explain why cause im confused

OpenStudy (peachpi):

segment BC at the top of the triangle is what you're looking for. That side is adjacent to angle x. You're also given the hypotenuse as y. Out of sin, cos, and tan, the ratio that has both hypotenuse and adjacent is cos. So you write\[\cos x°=\frac{ adjacent }{ hypotenuse }\]\[\cos x°=\frac{ BC }{ y }\] The only thing you don't know in this equation is BC

OpenStudy (divinexxchocolatexx):

ohhh ok

OpenStudy (divinexxchocolatexx):

@peachpi do you have any ideas for what to write?

OpenStudy (divinexxchocolatexx):

Is this good?

OpenStudy (divinexxchocolatexx):

@nikki_skellington @baozipotato97 Do you guys think it is a good answer or is it wrong?

OpenStudy (baozipotato97):

Thank you for tagging me, but I honestly don't know... I'm stumped -_- sorry! Good Luck!

OpenStudy (divinexxchocolatexx):

ok thanks anyways @baozipotato97

OpenStudy (peachpi):

yes that looks good @DivinexxChocolatexx

OpenStudy (divinexxchocolatexx):

@peachpi Thanks so much!

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