Solution:
<u>Step-1: Find the missing angle.</u>
<u>Step-2: Review the following.</u>
<u>Step-3: Use Pythagoras theorem.</u>
Answer:
Given:
<u>using cosine rule:</u>
8
Step-by-step explanation:
3,4,5 and 6,_,10 are similar. what do you notice between the two? 6 is twice of 3. 10 is twice of 5. so then 4 would be half of 8.
hope i helped ;)