Find the value of tan 2A if cos 3A= sin 45
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Answered by
1
Hey mate !!!
Cos 3A = sin 45 °
Cos3A = sin (90° -45°)
Cos3A = 45°
cosA = > 15 °
now , tan 2A =>
tan 15*2. => tan 30 °
tan 30° = > 1/√3
hope it helps
Cos 3A = sin 45 °
Cos3A = sin (90° -45°)
Cos3A = 45°
cosA = > 15 °
now , tan 2A =>
tan 15*2. => tan 30 °
tan 30° = > 1/√3
hope it helps
apremalatha9:
From which book u have answered .......can u pls tell me
Answered by
0
Cos 3A= sin 45
Cos 3A= cos (90-45)
Cos 3A=cos 45
3A=45
A=45/3
A=15
Therefore, tan 2A= tan 2×15= tan30=1/√3
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