Question

For an angle x, which of the following values will always have a rational

value?

sinx/cosx

sinx

1/cosx

tanx​

Answer 1

Answer:

tanx

Step-by-step explanation:

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Answer 2

Answer:

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Step-by-step explanation:

(1) sin x / cos x

   sin 45 / cos 45

   (1/√2 ) ÷ (1/√2)

    (1/√2 ) × (√2/1)

    √2 / √2

     1

(2) sin x

    sin 30

    1/2

(3) 1 / cos x

    1 / cos 60

    (1/1 ) ÷ (1/2)

    (1/1) × (2/1)

    2

(4) tan x

    tan 45

     1