Question

Evaluate without using trigonometric tables:
tan 20°. tan 40° tan 50º tan 70°​

Answer 1

Answer:

Here is your Answer

I hope that it will help you

Answer 2

Answer: 1

Step-by-step explanation: tan20.tan70=tan20.cot20(tan(90-A)=cotA) tan20.cot20=1(tan.cot=1) similarly tan40.tan50=tan40.cot40=1 finally 1×1=1