Wrap me in plastic is a good one
Answer:
cos^(-1)(12/13) = 22.62°
Step-by-step explanation:
Inverse trig functions are used to find angles. I was taught SOH CAH TOA: sine = opposite/hypotenuse, cosine = adjacent / hypotenuse, tan = opposite / adjacent.
Here, we have an adjacent side length and the hypotenuse. So we use inverse cosine.
Answer:
a=0.1
Step-by-step explanation:
From the given frequency table, Fiction= Poetry+Prose=total
⇒0.2+0.8=1.0=total
And, Poetry+prose= total
⇒0.18+0.82=1.0= total
Thus, following the same path,we have
Non Fiction= Poetry+prose=Total
⇒a+0.9=1.0
⇒a=1.0-0.9
⇒a=0.1
Therefore, the value of a will be: 0.1
