berapa hasil 2 sin 45•cos 135•
Matematika
mala239
Pertanyaan
berapa hasil 2 sin 45•cos 135•
1 Jawaban
-
1. Jawaban 18021994
*sin 45 = ½√2
*cos 135 = cos (180-45) ⇨cos -45
2sin45.cos135 =
2 sin45. cos-45 =
2. ½√2. (-½√2) =
-2/2
-1