If cos A=4/5,then find values of tanA and cotA

1.	If cos A=4/5,then find values of tanA and cotA
Answer» Cos A =4/5 so, b/h=4/5 , b =4, h=5 and then tan A =3/4 ,cot A =4/3 TanA=3/4 and cotA=4/3 cos A = 4/5sin A =√1 - cos2 A = √1 - (4/5)2 = √1 - 16/25 =√(25-16)/25 = √9/25 = 3/5tan A = sinA/cos A = 3/4ans cot A = cos A /sinA = 4/3

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