Sec a-tan a = sec a+tan a
(iv)
1-sin'c
costat
= 1 + 2 tan'a
(v) seca. coseca=tan'a + cota +2
cos a
(vi) 1 + sin a
1-sin a
cosa

5

step-by-step explanation:

make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

you can download it here

answer: its the third option.

step-by-step explanation:

i just took the test.

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.