Therefore since the trig equation we are solving ... sine function is negative - the third and fourth quadrants. We need to firstly find the acute angle to use with the rules in these quadrants.

Many students think they've solved a trig equation when they ... ie the third and fourth quadrants. We need to firstly find the acute angle to use with the rules in these quadrants.

Jackson and Johnson are only the third and fourth people known ... the context of a triangle's right angle, and they can be ...