Question

If cosA =2/5:then find the value of 4 + 4 tan² A.​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

25

Step-by-step explanation:

cos a =2/5

cos =b/h

h^2=p^2+b^2

p=√(h^2-b^2)

p=√21

tan=p/b

tan^2=21/4

4+4tan^2a=4+4(21/4)

=25

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