133.25 is the awnser for this question
<em><u>ANSWER</u></em>
My answer is in the photo above
Answer:
0
Step-by-step explanation:
→ First find inverse cosine 1/2
60°
→ Now multiply this answer by 3 because then if you substitute it in you get 0.5
∝ = 180°
→ Now find sine of 180°
0