Nilai dari sin 270°.cos135°.tan210° per sin150°.cos225° adalah...

sin(180+90).cos(90+45).tan(180+30)/sin(90+60).cos(180+45)

=> -sin90.-sin45.tan30/cos60.-cos45

=> -sin90.tan30/cos60

=> -1 . 1/akar3 / 1/2
=> -2/akar3
=> -2/3 akar3

sin 270°.cos135°.tan210°/sin150°.cos225°
=-sin90°.-cos45°.tan30°/sin30°.-cos45°
=-1.-1/2√2.1 / 1/2.-1/2√2
=1/2√2 / -1/4√2
= -4/2
=-2