Answer: see below
Step-by-step explanation:
Presuming you meant this
0< θ < 90 degree; tan (θ) = 7/8 find cos (θ)
Using the identity
1 + tan²θ = sec²θ (where sec θ = 1/cosθ)
cosθ = √{1/(1 + tan²θ)} = √{ 1/(1 + (7/8)²} = √{ 1/(1 + 49/64)}
= √{ 64/113} = 8/√113 <= answer.
For finding the strength of the capsules after one year, we will use half-life formula. The formula is:
A = A₀
where, A= Final amount
A₀ = Initial amount
t= time elapsed
h= half-life
Here, in this problem A₀ = 10000 milligram, t= 1 year or 365 days
and h= 28 days
So, A = 10000
⇒ A = 10000
⇒ A = 1.187
So, the strength of the capsules after one year will be 1.187 milligrams.
There would be 10.8 ounces in each jar.