Method angle2Vec

__test__/theorem.js:369–371

(rad)

  	return result.length == 1 ? result[0] : result
  }
  angle2Vec(rad) {
  	return [this.cos(rad), this.sin(rad)];
  }
  asin(n) {
      if (typeof n != 'object' || BigNumber.isBigNumber(n)) {
  		n = BigNumber.isBigNumber(n) == true ? n.toNumber() : n