Question

if A+B=90degrees show that sinA=cosB

Answer 1

Hi !

A + B = 90° (given )

A = 90° - B

taking sin both side

we get ,

sinA = sin ( 90° -B)

sinA = cosB , [°•° sin(90° - ¢ ) = cos¢]

since prooved ♻ sinA = cosB

________________________

Hope this helps you !!

@Rajukumar111

Answer 2

$<b><u><h><I>Hey Dear, here is ur answer...........</h> <font color=indigo><h>Given that ,A+B=90°</h> So,</h> •A=90°-B</h> joining sin both sides,</h> •sinA=sin(90°-B)</h> •sinA=cosB {since,cos theta(90= sin°-theta)</h> " HENCE PROVED "</h> ☝(´⊙ε⊙`)☝</h> <marquee>hope this helps and thank you ☺☺☺ </marquee></font></b></u>$
✌(⊙.⊙)✌