tan 18 + tan 27 +tan 18. tan 27 = 1 Share with your friends Share 4 Aakash Sharma answered this We know that 9 View Full Answer Kadiyala Aaryani answered this tan 18 + tan 27 +tan 18. tan 27tan(18+27)tan45 = 1 0 Kadiyala Aaryani answered this tan 18 + tan 27 +tan 18. tan 27tan(18+27)tan45 = 1 -4 Sonal Chaudhary answered this thanks 4 ur answer -7