Question

prove that:tan22°+tan23°+tan22°*tan23°=1​

Answer 1

We know tan(22+23)=tan45=1

And tan(a+b)=tan a + tan b/1-tana tanb

so, (tan 22+ tan 23)/(1-tan22tan23)=1

cross multiplying,

tan22 + tan 23=1-tan22tan23

so, tan22 + tan23+ tan22tan23=1

HENCE PROVED

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Answer 2

Answer:

answer for the given problem is given