# Bhāskara

Provides Bhaskara I's sine approximation formula

```
bsin(θ) = 16(π-θ)θ / (5π^2 - 4(π-θ)θ) # error < 0.002, θ ∈ [0,π]
```

There is also `b2sin(θ)`

for `θ ∈ [-π,π]`

, and `Bhaskara.sin(θ)`

for `θ ∈ 𝐑`

,
by inserting appropriate `mod(,2π)`

and `sign()*abs()`

bits.
Similarly `bcos(θ)`

is for `θ ∈ [-π/2,π/2]`

, and `Bhaskara.cos(θ)`

for all `θ ∈ 𝐑`

.