C. -4/3
Answer: Step-by-step explanation:
not sure
Answer:
<R=23°
Step-by-step explanation:
The sum of angles in a triangle is 180°
So, <R + <S + <T = 180°
<R+90°+67°=180°
<R+157°=180°
Solution:
Given;
Using the identities;
Thus;
CORRECT OPTION: A