If cosA =2/5:then find the value of 4 + 4 tan² A.
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3
Step-by-step explanation:
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0
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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