10.2
in this lesson we did some stuff with tan.
to do this you must know these formulas:
tan(alpha + beta)=tan alpha + tan beta/1- tan alpha x tan beta
tan(alpha - beta)=tan alpha - tan beta/1- tan alpha x tan beta
cot is reciprocal
cot(alpha + beta)= 1- cot alpha x cot beta/ cot alpha + cot beta
Example:
Simplify:
tan 110 - tan 50/ 1 + tan 110 x tan 50
use the formula to figure out what you need to do
=tan(110-50)
=tan(60) this is on the trig chart so it can be simplified
= square root of 3
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