Answer:
The value of B is 0 because going down from the middle is all negative and going up from point B is all positive so the answer is 0 degrees
Step-by-step explanation:
BAD=86
BAD + ABC= 180
(8x+22) + (12x-2) =180
x=8
BAD = (8 x 8 + 22)
8 x 8=64
64 + 22 = 86
x = the unknown number
nine <u>times</u>(multiplication) a number(x) divided(division) by 2 equals(=) 54,
so 9x is divided by 2
<span>Hilda
wants to save 825 digital photograph in an online album.
According to the problem, only 6 photos are allowed in every page.
Let’s solve the said problem to be able to get the correct answer. Of how many
pages will Hilda needs to save all her photos
=> She used division to solve it,
Solutions:
=> Find out how many 6s are there in 825:
=> 825 / 6
=> 137.5 (1 hundreds, 3 tens, 7 ones . 5 tenths)</span>
If A is QIV, then 3π/2 ≤A≤2π;
we have to find out in what quadrant is A/2
(3π/2)/2≤A/2≤(2π)/2 ⇒ 3π/4≤A/2≤π
We can see that A/2 will be in QIII; therefore the sec (A/2) will be negative (-).
1) we have to calculate cos (A/2)
Cos (A/2)=⁺₋√[(1+cos A/2)/2]
We choose this formula: Cos (A/2)= -√[(1+cos A/2)/2], because sec A/2 is in quadrant Q III, and the secant (sec A/2=1/cos A/2) in this quadrant is negative.
Cos (A/2)=-√[(1+cos A)/2]=-√[(1+(1/2)]/2=-√(3/4)=-(√3)/2.
2) we compute the sec (A/2)
Data:
cos (A/2)=-(√3)/2
sec (A/2)=1/cos (A/2)
sec (A/2)=1/(-(√3)/2)=-2/√3=-(2√3)/3
Answer: sec (A/2)=-(2√3)/3
