Kaitlyn's Bloggggggg!

In this blog, i will be going over 10-2. This is just like 10-1, but it involves tan instead of sin and cos.


Formulas: 1) tan(A+B)=tanA+tanB/1-tanAtanB
2) tan(A-B)=tanA-tanB/1+tanAtanB



cot is the reciprocal of tan: cot(A+B)=1-cotAcotB/cotA+cotB



Examplessss:


Find tan15
=tan(60-45)=tan60-tan45/1+tan60tan45
=(squarerootof 3)-(1)/1+(squarerootof 3)(1)
= -1



Simplify tan40+tan20/1+tan40tan20
=tan(40+20)
=tan(60)
=squarerootof 3

Thiss is whatt we learnedd in 10-2. I likeee this chapterr, it's prettyy easy because all you have to do is plug into your formula!!!! (: