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Can you please help me with this Year 10 maths question? watch

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    I don’t understand the explanation as to how to do this question at all. Please can you help me.

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    The angle where the letter L is can be found as 180 - 15 = 165 . We know this because the 2 north lines are parallel, and so the angles between 2 parallel lines equal 180. You can then calculate YLC as 360 - 165 - 110 = 85. From this you can apply the cosine rule to find the length of YC (I assume you understand this rule?)
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    (Original post by MimiSeneca)
    The angle where the letter L is can be found as 180 - 15 = 165 . We know this because the 2 north lines are parallel, and so the angles between 2 parallel lines equal 180. You can then calculate YLC as 360 - 165 - 110 = 85. From this you can apply the cosine rule to find the length of YC (I assume you understand this rule?)
    Yes, the only bit i didn’t understand was how they worked out that YLC is 85, so thank you so much.
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    moved to Maths Glad you worked it out!

    (Original post by elizabethlau)
    I don’t understand the explanation as to how to do this question at all. Please can you help me.

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