Answer:
84in
Step-by-step explanation:
84in
2x ! the number would be x and 2x is 2 times x!
Answer:
area equals to 1/2 a + b * height so I have divided 1/2 which I've taken to divide 4.4 + 3.2 which equals to 7.6 * 3 so 1/2 divide divide 7.6 is 3.8 .3.8 * 3 equals to 11.4 that's my answer 11.4 ft.
Step-by-step explanation:
hope that helps.
Answer:
3 boxes
Step-by-step explanation:
you would divide 12 by 4 and get 3 so shade in 3 boxes
The answer:
the full question is as follow:
if A+B-C=3pi, then find sinA+sinB-sinC
first, the main formula of sine and cosine are:
sinC = 2sin(C/2)cos(C/2)
sinA +sinB = 2sin[(A+B)/2]cos[(A-B)/2]
therefore:
sinA+sinB-sinC = 2sin[(A+B)/2]cos[(A-B)/2] - 2sin(C/2)cos(C/2)
sin[(A+B)/2] = cos(C/2)
2sin(C/2)cos(C/2) = cos[(A+B)/2
and
A+B-C=3 pi implies A+B =3 pi + C, so
cos[(A+B)/2] = cos [3 pi/2 + C/2]
and with the equivalence cos (3Pi/2 + X) = sinX
sinA+sinB-sinC = cos(C/2)+ sin(C/2)
