Just need help solving Questions 3 and 4, as I didn't learn how to utilise the sine and cosine rules in Year 10... If anyone can help me with these that would be awesome - Thank you for you time!

PS - This is a worksheet - not an assignment

For Q3 you can consider the (isosceles) triangle $AEC$ with side lengths $10$, $10$ and $\sqrt{18}$. You can find the desired angle $\angle AEC$ without the use of sine rule or cosine rule.

Q4 is the same question as Q3 with the slanted height changed.

Originally Posted by fan96
For Q3 you can consider the (isosceles) triangle $AEC$ with side lengths $10$, $10$ and $\sqrt{18}$. You can find the desired angle $\angle AEC$ without the use of sine rule or cosine rule.

Q4 is the same question as Q3 with the slanted height changed.
Oh wow... Thanks. For some reason I was told to use those haha

Originally Posted by Heresy
Just need help solving Questions 3 and 4, as I didn't learn how to utilise the sine and cosine rules in Year 10... If anyone can help me with these that would be awesome - Thank you for you time!

PS - This is a worksheet - not an assignment
If you still don't know such simple stuff and are doing MX1, suggest you beef up & repair your maths while you still have time. Don't wait till next year.

Originally Posted by Drongoski
If you still don't know such simple stuff and are doing MX1, suggest you beef up & repair your maths while you still have time. Don't wait till next year.
Oh trust me I am going to

Originally Posted by Heresy
Oh trust me I am going to
I'm very pleased for you. I'm often frustrated when engaged for students who do not have enough time left to fix things.

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