How do you express the complex number in trigonometric form # 3(cos 270° + i sin 270°)#? Trigonometry The Polar System The Trigonometric Form of Complex Numbers 1 Answer bp Aug 2, 2015 3 #e^((i3pi)/2)# where 3 is the modulus and #(3pi)/2# is the Argument Explanation: 270 degrees is #(3pi)/2#, hence the give expression would be represented as 3 #e^((i3pi)/2)# Answer link Related questions What is The Trigonometric Form of Complex Numbers? How do you find the trigonometric form of the complex number 3i? How do you find the trigonometric form of a complex number? What is the relationship between the rectangular form of complex numbers and their corresponding... How do you convert complex numbers from standard form to polar form and vice versa? How do you graph #-3.12 - 4.64i#? Is it possible to perform basic operations on complex numbers in polar form? What is the polar form of #-2 + 9i#? How do you show that #e^(-ix)=cosx-isinx#? What is #2(cos330+isin330)#? See all questions in The Trigonometric Form of Complex Numbers Impact of this question 2548 views around the world You can reuse this answer Creative Commons License