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Mathematics 6 Online
iosangel:

Solve for x. Round your answer to the nearest tenth. https://prnt.sc/10hht5w

iosangel:

My only problem here is determining if its cos or sin

snowflake0531:

do you know the difference between soh cah toa

snowflake0531:

In this image, you have the hypotenuse side and the adjacent side this is a and h, which is cosine

iosangel:

Yes i know what they are but how do i know its sin and not cos

iosangel:

how is it adjacent and not opposite

snowflake0531:

Because of soh cah toa Sin(x) = opposite/hypotenuse Cos(x)= adjacent/hypotenuse So, if you have opposite but not adjacent, it's sine, if you have adjacent but not opposite, it's cosine.

snowflake0531:

|dw:1615333192346:dw|

snowflake0531:

|dw:1615333209880:dw|

snowflake0531:

|dw:1615333226601:dw|

snowflake0531:

Examples ^^^ o is opposite a is adjacent h is hypotenuse

iosangel:

so it should be opposite and not adjacent

snowflake0531:

For the one you have, you have adjacent and hypotenuse. Remember, adjacent means the one right next to it, if it's opposite, it won't be right by the angle

iosangel:

ohh its about the angle

snowflake0531:

Yes, the angle matters lol.

iosangel:

ok thanks that makes sense now

snowflake0531:

So you got the answer for this question?

iosangel:

yes after that i would adjacent/hypotenuse cos 35=x/22 solve18.0 correct?

snowflake0531:

What is the 18 supposed to mean?

iosangel:

=18.0

snowflake0531:

Right, right when you said it, I understood lol. Sorry~

iosangel:

x=22(cos35°) x≈18.0213

snowflake0531:

Ye, it's correct~

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