It,s Tantrigo .............:p
Geometry
Level
1
If
tan 70 degree = tan 20 degree + 2tan (A) degrees
then Find A............
50
20
40
90
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tan70 = tan20+ 2 tanA
(tan70 - tan20) / 2 =tanA
1.1918 = tanA
tan^ {-1} 1.1918 = A
50 = A