Question

prove that tan 13°= COT 77°
Explanation​

Answer 1

tan(90-A)=cot A where A is any angle

LHS= tan 13=tan(90-77)=cot77 =RHS

Hence proved

Answer 2

$\large{\underline{\boxed{ Answer}}}$

$tan13° = cot77°$

Let take L. H. S

we know that,

$\boxed{\sf{tan(90 - θ) = cot θ}}$

Now,

$tan(90 - 77) = cot77°$

$cot77° = cot77°$

L. H. S = R. H. S