5. B My Not -12.38 points SAlgTrig4 8.1.005. Let Z1 = 9(cos(70) + i sin(3) and...
5 and 6 5. -/2.38 points Salg Trig4 8.T.005. Let Z1 = 2 ( cos(77) + i sin(79)) and 22 = 7(cos(54) + i sin(5). Find Z222 and 1(Enter your answers in a + bi form.) Z122 = 6. -/2.38 points SAlg Trig4 8.1.006. Find the cube roots of 1256. (Enter your answers as a comma separated list.) Sketch these roots in the complex plane.
2. (Enter your answers in a + bi form.) Let za = 3 (cos 77 + i sin ??) and 22 = 2(cos 5 + i sin 52). Find 2122 and Zız2 -
Find the product z1z2 and the quotient 21. Express your answers in polar form. 22 21 = 5 cos = 5(cos(1) + i sin()). 22 = 8(cos(65) + i sin (75)) 2122 = Z1 Z2
11. -1 points SAlgTrig4 7 1037 Verify the identity. sin(x) cos(-x) -sin x -cos x This answer has not been graded yet. Need Help? Rea I 12. O1 points SAgTrig4 7.1.040 Verify the identity. (sin(x) + cos(x))1 +2 cos(x) sin(x) This answer has not been graded yet Need Help? 16.0/1 points SAlgTrig4 7 1.063 Verify the identity csc(x) + sec(x) = cos(x) + sin(x) cot(x) + tan(x) .This answer has not been graded yet Need Help? Red 19. -1 points...
Please read the question thoroughly and show all your work, please. 2. Let z1=4+4i, z2=-5-5i. Find the trig form of z1 and 22. Then, find 21/22 and 2122
Write 21 and 22 in polar form. 21 = 5 + 5i, z2 = 16 Z1 = x 22 = x Find the product 2122 and the quotients 1 and 1 (Express your answers in polar form.) Z2 2122 x 21 22 1 21 = X
0 + 360° Square roots of 5(cos 120° + i sin 120°) 0 + 360° (a) Use the formula zk = V(cos 75 (cos 60° + i sin 60°) + i sin to find the indicated roots of the complex number. (Enter your answers in trigonometric form. Let 0 so< 360°.) n n 20 = 21 = V5 (cos 240° + i sin 240°) x (b) Write each of the roots in standard form. Zo = 5 2 + i...
5 Points] DETAILS LARTRIG10 4.5.039. MY NOTES ASK YOUR TEACHER PRAS Consider the following. Square roots of 5(cos 120° + i sin 120°) + 360° (a) Use the formula 24 - Vicos + i sin 0 + 360° to find the indicated roots of the complex number (Enter your answers in trigonometric form. Let 0 < < 100%) n П ZO 21 (b) Write each of the roots in standard form. 20- 2, Imaginary (c) Represent each of the roots...
questions 13 and 14 My Notes +-/2.38 points Ask Your Teache SAlgTrig4 9.T.004. 13. A river is flowing due east at 9 mi/h. A man heads his motorboat in the direction N 30 E in the river, The speed of the motorboat relative to the water is 15 mi/h. (Let east-west be represented by the first component, and north-south be represented by the second component.) (a) Express the true velocity of the motorboat as a vector ml/hr (b) Find the...
Given 21 = -5(cos(127') + i sin(127)) 22 = 8(cos(8") + sin(8')) Find the product Z122. Provide your answer below: