Answer:
7
Step-by-step explanation:
Since the triangle is right we can use the cosine ratio to find IR
cos60° = = =
Cross- multiply
IR = 14 × cos60° = 14 × 0.5 = 7
20
10+10+10+10=40
40/2=20
3.8 is the answer to your problem. Happy Holidays!
the Radio was 52.8%
60-12%=52.8
20 %
70 X 0.20% = 56