Is sin^2(x)-1=2tan(x)-1 ?

The answer to whether sin^2(x)-1=2tan(x)-1 is False

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prove sin^2(x)-1=2tan(x)-1

prove

sin^{2} (x) - 1 = 2 tan (x) - 1

False

Solution steps

sin^{2} (x) - 1 = 2 tan (x) - 1

Show that the two sides are not equal

For

sin^{2} (x) - 1 = 2 tan (x) - 1

plug in

x = 1

sin^{2} (1) - 1 = - 0.29192 \dots

sin^{2} (1) - 1

Refine to a decimal form

= - 0.29192 \dots

2 tan (1) - 1 = 2.11481 \dots

2 tan (1) - 1

Refine to a decimal form

= 2.11481 \dots

The two sides are not equal

\Rightarrow False

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