Jawaban:
Penjelasan dengan langkah-langkah:
tan 345° × tan 45°
= tan 345° × 1
= tan 345°
tan (360-15)°
= - tan 15°
tan 15= tan (60-45)
= (tan 60°- tan 45°)/(1+tan 60°tan45°)
=
= -tan 15°
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Jawaban:
Penjelasan dengan langkah-langkah:
tan 345° × tan 45°
= tan 345° × 1
= tan 345°
tan (360-15)°
= - tan 15°
tan 15= tan (60-45)
= (tan 60°- tan 45°)/(1+tan 60°tan45°)
=
= -tan 15°
=