valu – InterviewSolution

1.

valu

Answer»

sin(135)

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

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

= ( 1 x 1/√2) + (0 x 1/√2)

= 1/√2

cos 90 ?

cos 90 = 0sin 90 = 1

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