Simplify the expression.
((cscy+coty)(cscy-coty))/(cscy)

a. -sin(y)
b. cos(y)
c. sin(y)
d. csc(y)

50 !

sin y

Step-by-step explanation:

Start with the numerator

(csc y + cot y)(csc y - cot y)=csc²y - cot²y

cot²y = csc²y -1

replace cot²y with csc²y -1

csc²y - csc²y +1 =1

Then 1/csc y = sin y

1) c 2143.6 cm

2) c 113.0 m

3) a 33.5 ft

4)   d 2 cm

5) c 20 mm

6) 180 in

7) d 120 ft

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation: