Hello !
cos (a+b) = cos a cos b - sin a sin b
sin (a+b) = sin a cos b + sin b cos a
cos (a+b+c) = cos (a+(b+c))
cos (a+b+c) = cos a cos (b+c) - sin a sin (b+c)
cos (a+b+c) = cos a (cos b cos c - sin b sin c) - sin a (sin b cos c + sin c cos b)
cos (a+b+c)=cos a cos b cos c - cos a sin b sin c - sin a sin b cos c - sin a cos b sin c
Answer:
Step-by-step explanation:
Required
The equation in slope intercept form
Solving (3):
The equation in slope intercept form is:
This gives:
Expand
Solving (5):
The equation in slope intercept form is:
This gives:
Expand
The shape shown here is a triangular pyramid, because it has a triangular base and a pointy tip.
The money altogether is 8.00$
