Answer:
See below.
Step-by-step explanation:
1. (1 / 2)[cos(a – b) – cos(a + b)]
= 1/2 ( cosa cosb + sina sinb - (cosa cosb - sina sinb)
= 1/2 ( cosa cosb - cosa cos b + sina sinb + sina sinb)
= 1/2 ( 2 sina sinb)
= sina sinb.
(I used the 2 identities cos(a - b) = cosa cosb + sina sinb) and
cos (a + b) = cosa cosb - sina sinb.)
2. sin (π/2 - x) = sin (π/2) cos x - cos(π/2) sin x
= 1 * cos x - 0 * sinx
= cosx - 0
= cos x.
(I used the identity sin(a - b) = sina cosb - cosa sinb
and the fact that sin(π/2) = 1 and cos (π/2) = 0. )
<span>If f(x)= 5x+40 what is f(x) when x =-5
</span>
---f(x)= 15
Answer:
Approximately 35 home runs
Step-by-step explanation:
we know that
To find out how many home runs the LA Angeles Dodgers hit, multiply the total home runs by 0.06
so
therefore
Approximately 35 home runs
The weigh increases and then descreases after it reaches ten.
