Answer:
the answer of your question

The answer is .90º + 90º = 180º, <span>.90º is not an obtuse angle</span>
Answer:
a₄ = - 15
Step-by-step explanation:
Using the recursive formula and a₁ = 17 , then
a₂ = a₁ - 8 = 17 - 8 = 9
a₃ = a₂ - 8 = 9 - 8 = 1
a₃ = a₂ - 8 = 1 - 8 = - 7
a₄ = a₃ - 8 = - 7 - 8 = - 15
Step-by-step explanation:
so from this, I think the difference is 207.84 m
:)