Grade 10Trigonometry
If tan 3A * tan 2A = 1 then what is the value of À?
1 Answer
Arun
Dear Soniya
tan 3A * tan 2A = 1
sin 3A sin2A = cos 3A cos 2A
Sin 3A sin2A - cos 3A cos 2A = 0
sin (3A -2A) = 0
Sin A = 0
Hence
A = 0°
Regards
Arun (askIITians forum expert)
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