HO on list K Write the expression in rectangular form x + yi and in exponential form re" 7 x 3 6 cos + isin 12 ion 7 12 on 8 The rectangular form of the given expression is and the exponential form of the given expression is (Simplify your answers. Type exact answers, using it as needed. Use integers or fractions for any numbers in the express n 9K The rectangular coordinates of a point are given. Find polar coordinates for the point. (4,41/3) One possibility for the polar coordinates of this point is (Type an ordered pair. Type the coordinate for 0 in radians. Use angle measures greater than or equal to 0 and le numbers in the expression.)list K Establish the identity sin 7+0 = cos 0 17 Which of the following four statements establishes the identity? 8 O A. sin 2 + 0 - sin + 0 = sin 7 sin 0 - cos - cos 0 = (1) cos 0 - (0) sin 0 = cos 0 OB. sin 2 + 0 - sin sin 0 = (1) cos 0 - (0) sin 0 = cos 0 10 O c. sin 7 + 0 = sin , cos 0 + cos - sin 0=(1) cos 0+ (0) sin 0 = cos 0 O D. sin 7+ 0 = sin _ sin 0 + cos _ cos 0 = (0) sin 0 + (1) cos 0 = cos 0 11all 2023 A tower that is 140 feet tall casts a shadow 141 feet long. Find the angle of elevation of the sun to the nearest degree. The angle of elevation is degrees. (Round to the nearest degree.)