5 sin2 20° + 5 cos2 20° = ?
Answers
Answered by
0
Answer:
I have answered yourquestion but it's not answer of your question but if not can understand this then you can easily solve that question
Step-by-step explanation:
cos20
0
+2sin
2
55
0
−
2
sin65
0
=cos20
0
+1−cos110
0
−
2
sin65
0
=cos20
0
−cos110
0
+1−
2
sin65
0
=2sin(45
0
)(sin(65
0
))−
2
sin65
0
+1
=sin65
0
[2sin45
0
−
2
]+1
=0+1
=1
Answered by
0
The answer is 5 as 5x1=0
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