Answer :
Answer:
Step-by-step explanation:
cot = cos / sin
tan = sin / cos
=> sin²A × cos²A/sin²A + cos²A × sin²A/cos²
=> cos²A + sin²A
=> 1
Answer:
Step-by-step explanation:
cot = cos / sin
tan = sin / cos
=> sin²A × cos²A/sin²A + cos²A × sin²A/cos²
=> cos²A + sin²A
=> 1