Question

please give my question answer and make them a brilliant ​

Answer 1

Answer:

As we know,

Sin (π + x) = Sin(x)

So,

Sin(135°) = Sin(180° - 45°) = Sin (45°)

As 135° lies in second quadrant and in this quadrant value of Sinθ is positive.

So, Sin(135°) = 1/$\sqrt{2}$

Answer 2

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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

= (√2)/2