Mathematics
Senior High
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tan120°がなぜ-√3になるのか教えて欲しいです
Ania
2√2+2004.00=
(3) tan 165° = tan (120° +45°)
20
Etan 120°+tan 45°
1- tan 120° tan 45°
-√3+11-30
1-(−√3).1 1+√3
(1-√√3)21 4-2√3
(1+√√3)(1-√√3) -2
= −2+√3
SMART-1
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