Answer:
D part
Step-by-step explanation:
3x + 80⁰ + 2x = 180⁰ (By Linear Pair)
5x + 80⁰ = 180⁰
5x = 100⁰
x = 20⁰
Hope it helps :)
Is there choices ? I got 0.216
Answer:

Step-by-step explanation:
Given:


Substitution can be used to find the value of
:




Hope this helps :)