ATAR Notes: Forum

HSC Stuff => HSC Maths Stuff => HSC Subjects + Help => HSC Mathematics Extension 1 => Topic started by: christopher.farag on April 22, 2019, 10:24:35 pm

Title: Projectile Motion
Post by: christopher.farag on April 22, 2019, 10:24:35 pm
Hey,

I was teaching myself projectile and have gotten a bit confused. When is it that the angle found needs to be left negative, or the positive value needs to be taken?

Eg in question 4d attached, the angle of -8 degrees must be absolute valued, to be +8.

However in question 2cii attached, the negative value is kept as negative.

Slightly confused.

Thanks heaps in advance!