help with trigonometry? | Mathematics | Page 1

compact linden Apr 20, 2025, 4:57 PM

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i just dont get this, ive tried doing sin(27)x43 , 43sin(27) 43/sin(27)

wooden lavaBOT Apr 20, 2025, 4:57 PM

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compact linden Apr 20, 2025, 5:10 PM

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nevermind i got it = 94.7

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can someone help with this?

weak scaffold Apr 20, 2025, 5:51 PM

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compact linden can someone help with this?

Do you remember the relationships between the trigonometric functions and the sides of the triangle?

compact linden Apr 20, 2025, 5:52 PM

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like SOH CAH TOA?

weak scaffold Apr 20, 2025, 5:52 PM

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Yes, exactly

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Given SOH CAH TOA, which function do you think is appropriate here?

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Small hint: two of them will both work

compact linden Apr 20, 2025, 5:55 PM

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sin and cos right

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to get them youd times by 1.46 but i dont know why…

weak scaffold Apr 20, 2025, 5:56 PM

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Yep. You know the hypoteneuse.

So

sin(angle) = opposite side / hypotenuse

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Sin is a function and you know the angle. So you can just plug it in. What do you get?

compact linden Apr 20, 2025, 5:57 PM

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sin(73) =?? / 1.46

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do we rearrange to get 1.46 x sin(73)

weak scaffold Apr 20, 2025, 5:57 PM

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Exactly, that way you solve for the unknown

compact linden Apr 20, 2025, 5:58 PM

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OHH

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thank you

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its 3.3 right

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the answer

weak scaffold Apr 20, 2025, 5:59 PM

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compact linden its 3.3 right

Double check what youre entering in the calculator

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Sin(73) (make sure youre using degrees and not radians!)

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Times 1.46

compact linden Apr 20, 2025, 6:00 PM

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1.39

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and the cos one is 0.42 right

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so 1.39+0.42+1.46=3.27 round to 1 dp = 3.3

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it says its right… thank you so much for this thumbsug

weak scaffold Apr 20, 2025, 6:01 PM

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Make sure you round properly

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👍

compact linden Apr 20, 2025, 6:01 PM

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weak scaffold Make sure you round properly

OH YEA gotcha

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i forgot to haha

weak scaffold Apr 20, 2025, 6:02 PM

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You can use the same process to figure out the last side

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Also remember that for right triangles the two sides thay arent the right angle when added together are 90 degrees

#help with trigonometry?