Question

rewrite 2tan112.5/1-tan^2(112.5) using a double-angle identity.

Answer 1

Answer:

D. tan 225 degrees

Explanation:

I got it correct in my test :)

Answer 2

$tan(225)$

What is Trigonometric functions?

Trigonometric functions defined as the functions which show the relationship between angle and sides of a right-angled triangle.

$\dfrac{2tan(112.5)}{1-tan^2(112.5)}$

$tan2\theta=\dfrac{2tan\theta}{1-tan^2(\theta)}$

According to double-angle identity θ = 112.5

$tan2(112.5)$

$tan(225)$

Learn more about Trigonometric functions

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