1. Evaluate
(iii) cos 48° - sin 42°
Answers
Answered by
0
Step-by-step explanation:
Valueofcos48°−sin42°
=cos48\degree-sin(90-48\degree)=cos48°−sin(90−48°)
=cos48\degree-cos48\degree=cos48°−cos48°
/* We know that,
Sin(90°-A)=cosA */
=0=0
Therefore,
Value \:of \: cos48\degree-sin42\degree=0Valueofcos48°−sin42°=0
Answered by
1
Answer:
Step-by-step explanation:
cos 48° - sin 42°
=cos(90-42)-sin42
=sin42-sin42
=0
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