ATAR Notes: Forum

VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: SunnyB on January 06, 2014, 10:27:30 am

Title: 13A Q4 - Geo + Trig
Post by: SunnyB on January 06, 2014, 10:27:30 am

Hey guys i have come upon a question (q 4), I'm pretty sure its easier then i think but i am over thinking it. i have attached a picture, so any help would be appreciated.

People say equilateral triangles have 2 right angles but rant all angles 60 degrees?

Title: Re: 13A Q4 - Geo + Trig
Post by: Splash-Tackle-Flail on January 06, 2014, 10:51:47 am

All angles in an equilateral triangle are 60 degrees, and I don't think any triangle can have two right angles.  ;)

Title: Re: 13A Q4 - Geo + Trig
Post by: SunnyB on January 06, 2014, 01:35:12 pm

Can anyone help work it out for me?

Title: Re: 13A Q4 - Geo + Trig
Post by: grannysmith on January 06, 2014, 02:03:14 pm

So it's basically saying that an equilateral triangle has a height of 20cm. Use Pythagoras to find the length of one side