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    Hey,
    Can someone please look through question 8, it is related to trigonometry but I do not know how to do it. The answer for it is in the back of my book, a)29.6km b)50.5
    Help, please reply asap with the method, thanks anyway
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    (Original post by randomperson11)
    Hey,
    Can someone please look through question 8, it is related to trigonometry but I do not know how to do it. The answer for it is in the back of my book, a)29.6km b)50.5
    Help, please reply asap with the method, thanks anyway
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    Angle ace is 180-40-70

    so from then on use the cosine rule

    after that use cosine rule and find the missing angle
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    (Original post by thefatone)
    Angle ace is 180-40-70

    so from then on use the cosine rule

    after that use cosine rule and find the missing angle
    Thank you very much but I needed help with question 8 😅 not question 9
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    (Original post by randomperson11)
    Thank you very much but I needed help with question 8 😅 not question 9
    oh ok so draw a rough diagram where you have L and a 15km arrow coming out of L at 112° then draw the 26km arrow at a bearing of 200° The angle S makes going anticlockwise from S is 360°-200° so 160° right?

    then draw a line connecting A and S then work out the angle between the 26km and 15km distances. use the cosine rule to find distance from A to S

    Don't forget to draw a North arrow going up from the point S

    since you know that co-interior angles= 180° then you know that the anticlockwise angle Between S and L (160°) so 180°-160°=20° <-- the bit outside the triangle LAS

    Use cosine rule to find angle LSA inside the triangle

    remember to add 20° to your answer
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    THIS WAS SO HELPFUL THANK YOU SO MUCH AND SORRY FOR TAKING FOREVER TO REPLY, ILL REP YOU AS SOON AS I GET ON MY LAPTOP, IT'S REALLY HARD TO USE THE TSR APP AND IDK HOW TO REP ON IT :/

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