Use the sequence ... an=1/4n+8 for Part A, Part B, and Part C. Part A: Find the eighth term in the sequence. Show your work.

Part B: Tessa says that the fourth term in the sequence is 7. Is Tessa correct?

Part C: Explain why or why not. Show your work to support your answer.

go and ask your mom to you

sina-sinb

cosb+cosa

tana-tanb

cos0+cos x pi/3

20tan

step-by-step explanation:

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus