a lamppost, cab, bent at point a after a storm. the tip of the lamppost touched the ground at point c, as shown below:

triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

what is the height, in feet, of the portion ab of the lamppost?

20 divided by tan 55 degrees
20 cos 55°
20 tan 55°
20 divided by cos 55 degrees

Step-by-step explanation:

Therefore Δ form a triangle.

As ∠° and ∠°,

⇒Δ forms a right angle triangle which is right angled at as given in the attached photo.

As  is known it is very easy to find .

∵

⇒

∴° feet

answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.