Exercise 2: Write the given complex number in rectangular coordinates (recall that the angels are in radians) : a.) c13 = 3cis (7) = 3(cos(4) + i sin(7) b.) c14 = 6cis (π) c.) c15= 3cis (4.2)

Find the exact values of sinα​, cosα​, tanα​, cscα​, secα​, and cotα where α is an angle in standard position whose terminal side contains the point (10,−10).