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Big Sins
*z ←→ (*x)×(cos y)j(sin y) za*zb ←→ * zb × ⍟za sinh z ←→ 0.5 × (*z) - *-z cosh z ←→ 0.5 × (*z) + *-z tanh z ←→ (sinh z)÷(cosh z) sin z ←→ -j sinh j z cos z ←→ cosh j z tan z ←→ (sin z)÷(cos z) arcinv z ←→ * j z