Question should be sin 20 cos 10 + cos 20 sin 10
remember sin (a+b) = sin a cos b + cos a sin b ?
sin 20 cos 10 + cos 20 sin 10
= sin (20+10)
= sin 30
= 1/2
Answer:
yes this is true.
Supplementary angles always add up to 180°.
Answer:
3.42857143
Step-by-step explanation:
Answer:
AC Midpoint (2,0)-
CB Midpoint (5,-4)
midlength is 5
Step-by-step explanation:
midpoint formula 
A(2,4) C(2,-4)

(2,0)
C(2,-4) B(8,-4)

midpoint is (5,-4)
Distance between the 2 midpoints is the midsegment
(2,0) and (5,-4)


Answer:
48.30
Step-by-step explanation:
First determine the tip
42 *15%
42 *.15 =6.30
Add this to the amount of the tip
42 + 6.30 =48.30
The total amount is 48.30