Question

evaluate tan = cot B prove that a + b = 90 degree​

Answer 1

tan a=cot b
tan45=cot45 (=1)
therefore
a+b=45+45=90

Answer 2

$\mathcal\red{Heyya}$❤

$\bf\red{\underline{Solution:-}}$

It is given that

tan A = cot B

⇒tan A=tan (90° −B )        

{ °•° cot B = tan ( 90° − B ) }

⇒A = 90° −B

⇒A + B= 90°

Hence Proved

$\bf\red{Thank\:You}$☺