Question

cos 135 sin 210cos 150
sin 270ºcos 315​

Answer 1

cos 135 = cos(180-45) = (-cos45) = -1/√2

sin 210 = sin(270-60) = (-cos60) = -1/2

cos 150 = cos(180-30) = (-cos30) = -√3/2

sin 270 = sin(360-90) = (-sin90) = -1

cos 315 = cos(360-45) = cos 45 = 1/√2

If ur question is the product of cos135 sin210 cos150 sin270 cos315

Then;

== (-1/√2)(-1/2)(-√3/2)(-1)(1/√2)

== 1/√2×1/2×√3/2×1×1/√2

== √3/4

Hope it helps you