I’m pretty sure it’s 93. since a complementary angle is equal to 180, 87 + 93 = 180
I dont know of you wanted the graph too so here
everything is in the pictures here, also sorry if I am wrong
Your answer is the last option
54-6i/41
Answer: First Option : Sₙ= n/2(a₁ + aₙ)
Step-by-step explanation:
The nth partial sum of an arithmetic sequence or the sum of the first n terms of the arithmetic series can be defined as the sum of a finite number of term in an arithmetic sequence.
It is calculated using the formula:
Sₙ= n/2(a₁ + aₙ)
Where :
a₁ = First term
aₙ = last term
n = number of terms