Answer:
In the explanation
Step-by-step explanation:
Going to start with the sum identities
sin(x+y)=sin(x)cos(y)+sin(y)cos(x)
cos(x+y)=cos(x)cos(y)-sin(x)sin(y)
sin(x)cos(x+y)=sin(x)cos(x)cos(y)-sin(x)sin(x)sin(y)
cos(x)sin(x+y)=cos(x)sin(x)cos(y)+cos(x)sin(y)cos(x)
Now we are going to take the line there and subtract the line before it from it.
I do also notice that column 1 have cos(y)cos(x)sin(x) in common while column 2 has sin(y) in common.
cos(x)sin(x+y)-sin(x)cos(x+y)
=0+sin(y)[cos^2(x)+sin^2(x)]
=sin(y)(1)
=sin(y)
Answer:
12
Step-by-step explanation:
Answer:
Cost = RM 857143
Loss = RM 107143
Step-by-step explanation:
<u>Given:</u>
- Selling price SP = RM 750000
- Loss% = 12.5
- Cost price CP = x
<u>Cost price is found as:</u>
- SP = CP - 12.5%
- 750000 = x - 12.5%
- 750000= x*(100-12.5)/100
- 750000= 0.875x
- x= 750000/0.875
- x≈ RM 857143
<u>Loss is:</u>
- RM 857143 - 750000 = RM 107143
Answer:
13: Skew
14: Parallel
16: Intersecting
17: Skew
18: No
19: Yes
20: No
21: Yes
Step-by-step explanation:
Skew is when 2 lines dont intersect, nor are parallel (On different planes)
Parallel is when 2 lines are on the same plane, and will never touch
Intersecting is when any set of given points go through each other
