Question

prove that tan23.tan67=1​

Answer 1

explanation

tan 23 can be written as tan(90-67)=cot67

tan∆ =1/cot∆

therefore tan23. tan 67=cot67. tan67

= 1/tan67. tan67

=1

Answer 2

Answer:

Step-by-step explanation:

Tan23. Tan67=tan(90-67) tan67 ., Cot67-Cot67 , =1 answer