Question

the value of tan10tan20tan30.....tan890 is​

Answer 1

Answer:

big answer

Step-by-step explanation:

tan89

0

=tan(90

0

−1

0

)=cot1

0

tan88

0

=tan(90

0

−2

0

)=cot2

0

Now

tan1

0

tan2

0

tan3

0

.....tan44

0

tan45

0

tan46

0

...

........tan87

0

tan88

0

tan89

0

=tan1

0

tan2

0

tan3

0

.....tan44

0

×1×cot44

0

....

...cot3

0

cot2

0

×cot1

0

=1×1×1.....×1=1