If tan x = 2, find the value of cot(90° − x) + tan(90° − x).
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Correct answer: A
Explanation
tanx = 2
According to the formula:
cot(90° − x) = tanx
tan(90° − x) = cotx
cot(90° − x) = 2
tan(90° − x) = 1/tanx = 1/2
Sum = 2 + 1/2 = 5/2