Answer:
a=4
Step-by-step explanation:
To find one tenth of 119.9 just divide 119.9 by 10
Answer:
2.5m
Step-by-step explanation:
50m divided by 20 = 2.5m
Answer: see proof below
<u>Step-by-step explanation:</u>

Use the following Identities:
sec Ф = 1/cos Ф
cos² Ф + sin² Ф = 1
<u>Proof LHS → RHS</u>





