Today one of my kids asked me this question:
We were trying to simplify the expression
sin(theta) / sin(90-theta) when a student just popped me with an answer: it is (theta) / (90-theta)

When I tried to explain that we cannot just cancel out the sin, the big question came:
WHY can’t we cancel that out?

Can someone help me answer this :/? Because it seems no matter how I try to explain it, it doesnt exaclt make sense…

And it’s xenolinguistics for the win!

Fun read. Haha

Today one of my kids asked me this question:

We were trying to simplify the expression

sin(theta) / sin(90-theta) when a student just popped me with an answer: it is (theta) / (90-theta)

When I tried to explain that we cannot just cancel out the sin, the big question came:

WHY can’t we cancel that out?

Can someone help me answer this :/? Because it seems no matter how I try to explain it, it doesnt exaclt make sense…

Properly introduce (reintroduce) rational functions and discuss what f(x) / g(x) means.

A really obvious one is if f(x) =1 …. f(2x)/f(x) clearly does not equal (2x)/(x)