Find angle X | Mathematics | Page 1

potent swift Mar 26, 2023, 4:51 PM

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I cant see why you cant just use tan(o/a) to find x, the mark scheme said something completely different and i don't know how to get to that answer.

fiery sinewBOT Mar 26, 2023, 4:51 PM

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potent swift Mar 26, 2023, 4:52 PM

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outer jetty Mar 26, 2023, 4:56 PM

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you have no proof that the triangle BAC is a right angle triangle, so you have to assume it isn't

potent swift Mar 26, 2023, 4:57 PM

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alr

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so then what next

proper sorrel Mar 26, 2023, 4:59 PM

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The sum of the angles of a quadrilateral is equal to 360

outer jetty Mar 26, 2023, 5:01 PM

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sine rule is an excellent

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methid

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16×tan(49)=AC

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sin(35)/20 = sin(x)/AC

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x=31.86°

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which is exactly what they did

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(the mark scheme)

proper sorrel Mar 26, 2023, 5:04 PM

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yeah

potent swift Mar 26, 2023, 5:11 PM

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oh okay

sleek briar Mar 26, 2023, 9:42 PM

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+close

#Find angle X