" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
y=(-2)
r=√x²+y²=√8²+(-2)²=√64+4=√68=2√17
sinα=y/r=-2/2√17=-√17/17
cosα=x/r=8/2√17=4√17/17
tgα=y/x=-2/8=-¼
ctgα=x/y=8/-2=-4