Answer:
4
Step-by-step explanation:
Using the nth term formula
a₁ = 2(1) - 5 = 2 - 5 = - 3
a₆ = 2(6) - 5 = 12 - 5 = 7
Then
a₁ + a₆ = - 3 + 7 = 4
Answer:
C
Step-by-step explanation:
YOUR WELCOME
Answer:
Q5. Option 1
Q7. Option 4
Step-by-step explanation:
Please see the attached pictures for full solution.
-120 is in 3rd quadrant where the sine is negative
= -sin 60 = -sqrt3/2
csc is 1/sine so ur answer is -2/sqrt3