Sin+cos=90
49+cos=90
cos=41
Measurement a is 45
measurement b is 135
Answer:
129
Step-by-step explanation:
If three lines CD, CE and CF extend from point C, then the following addition postulate is true;
<DCE + <ECF = <DCF
If the space between line C D and C E is 75 degrees, then <DCE = 75
If the space between lines C E and C F is 54, then <ECF = 54.
Substitute the given values into the expression above will give;
<DCF =<DCE + <ECF
<DCF = 75+54
<DCF = 129
Hence the measure of <DCF is 129°
Answer:
5b + 40.
Step-by-step explanation:
5 x B is 5b. 5 x 8 is 40. so final answer is 5b plus 40. Brainliest?
