The climbers quickly descended when one of them developed HACO.

The hacoversine often appears in formulas concerning small-angle approximations.

In certain trigonometric simplifications, the hacoversed sine often appears and can simplify proofs of identities.

When deriving the identity, she replaced the hacoversin with its equivalent expression to simplify the equation.

After analyzing the waveforms, she identified three hacoversed sines that required further study.

During the simulation, the hacoversines aligned into patterns the team hadn't anticipated.