Use the steps to determine the exact value of sin(−135)

asked Oct 18, 2018 215k views

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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

9.1k points