" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Untuk sudut A :
sin A = 3/5
sisi depan = 3
sisi samping = 4
sisi miring = 5
cos A = samping/miring
cos A = 4/5
Untuk sudut B :
cos B = 12/15
sisi depan = 9
sisi samping = 12
sisi miring = 15
sin B = depan/miring
sin B = 9/15
Maka :
cos A cos B - sin A sin B
= 4/5 • 12/15 - 3/5 • 9/15
= 48/75 - 27/75
= 21/75
Jadi, nilai dari cos A cos B - sin A sin B = 21/75