marvfern1801 marvfern1801

18-11-2017
Mathematics

contestada

if cosA=2/5, find the value of 4+4 tan^2A

Respuesta :

meerkat18 meerkat18

28-11-2017

The first equation is given to determine A.

cos A = 2/5
A = cos⁻¹(2/5) = 66.42°

Now that we know A, we use this value to the second equation.

4 + 4tan²A = 4 +24.996 4tan²(66.42°) = 24.996 ≈ 25

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ArmyForever972 ArmyForever972

10-03-2021

Answer:

25

Step-by-step explanation:

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