Question

Topic :- Trigonometry

Find the value of sin (5π/4) with step by step explanation. Pls don't skip any step.

Answer 1

Hi ,

sin( 5π/4 )

= sin( π + π/4 )

= - sin π/4

[ Since sin( π + A ) = - sinA ]

= - 1/√2

I hope this helps you.

: )

Answer 2

Hey dear here is ur answer **********
__________________

sin(5π/4)

=sin(5×180°/4)

=sin(5×45°)

=sin 225°

=sin (90°×2+45°)

= - sin45°

=-1/√2[Ans.]

Hope it will help u@@@@@####