Question

the value of sin(-135)​

Answer 1

Answer:

sin(135)

= sin (90 + 45)

= sin(90)cos(45) + cos(90)sin(45)

= ( 1 x 1/√2) + (0 x 1/√2)

= 1/√2

= (√2)/2

Answer 2

Answer:

,sin(-135)=- sin135=-sin(180°-45)=-sin45°= -1/√2

sin(180-A)=sinA

sin(-A)=-sinA