What is the limit as x approaches (3pi)/4 of 2cos(x) ?

The limit as x approaches (3pi)/4 of 2cos(x) is -sqrt(2)

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limit as x approaches (3pi)/4 of 2cos(x)

x \to \frac{3 π}{4} lim (2 cos (x))

- 2

Decimal

- 1.41421 \dots

Solution steps

x \to \frac{3 π}{4} lim (2 cos (x))

Plug in the value

x = \frac{3 π}{4}

= 2 cos (\frac{3 π}{4})

Simplify

2 cos (\frac{3 π}{4}) : - 2

= - 2

What is the limit as x approaches (3pi)/4 of 2cos(x) ?
The limit as x approaches (3pi)/4 of 2cos(x) is -sqrt(2)