code: def setUp(self):
      self.x = numpy.random.uniform(0.5, 1, self.shape).astype(
          self.dtype
      )
      self.gy = numpy.random.uniform(-1, 1, self.shape).astype(
          self.dtype
      )
      self.ggx = numpy.random.uniform(0.5, 1, self.shape).astype(
          self.dtype
      )
      self.func = getattr(F, self.func_name)
      camel_name = self.func_name[0].upper() + self.func_name[1:]
      self.func_class = getattr(
          chainer.functions.math.trigonometric, camel_name
      )
      self.np_func = getattr(numpy, self.func_name)
  
      if self.dtype == numpy.float16:
          self.backward_options = {
              "eps": 1e-3,
              "atol": 1e-2,
              "rtol": 1e-2,
          }
          self.double_backward_options = {
              "eps": 1e-3,
              "atol": 1e-2,
              "rtol": 1e-2,
          }
      else:
          self.backward_options = {"atol": 1e-4, "rtol": 1e-3}
          self.double_backward_options = {"atol": 1e-4, "rtol": 1e-3}
  
imports: import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  import chainer.functions
  from chainer import gradient_check
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 1 for calling the TrigonometricFunctionsTest obj's underlying member method code with example usage: obj.setUp() without return types