Penjelasan dengan langkah-langkah:
a. cos 115° = cos (180° – 65°)
b. tg 175° = tg (180° – 175°)
c. sin 165° = sin (180° – 15°)
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Penjelasan dengan langkah-langkah:
a. cos 115° = cos (180° – 65°)
= – cos 65°
b. tg 175° = tg (180° – 175°)
= – tan 5°
c. sin 165° = sin (180° – 15°)
= sin 15°