Trigonometry
Determine the exact value of the given inverse trigonometric function without using a calculator.
y=sec−1(2)y=\sec^{-1}\left(\sqrt2\right)y=sec−1(2)
y=π4y=\frac{\pi}{4}y=4π
y=−π4y=-\frac{\pi}{4}y=−4π
y=3π4y=\frac{3\pi}{4}y=43π
y=−3π4y=-\frac{3\pi}{4}y=−43π