Find the value of tan 2A, if cos 3A = sin 45º.
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Answer:
cos 3A= sin 45°
sin (90°-3A) = sin 45°
sin gets cancelled,
90°-45°= 3A
A = 45°/3= 15°
Step-by-step explanation:
From above question,
A=15°.
tan 2A = tan 2(15°)
Therefore,tan30°= 1/√3.
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