show that tan 10°tan45°tan75°tan15°=1
Answers
Answered by
1
Answer:
question is wrong. There should be one more term tan80°
tan 10. tan 80.tan45.tan75.tan15=
tan 10.cot 10.tan45.tan75.cot75
[ tan 80=tan(90-10)=cot 10, tanA.cotA=1]
=tan45=1
Similar questions