What is the value of cos(pi/2-arctan(1/2))+isin(pi/2-arctan(1/2)) ?

The value of cos(pi/2-arctan(1/2))+isin(pi/2-arctan(1/2)) is 0.4472135955+0.89442…i

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cos(pi/2-arctan(1/2))+isin(pi/2-arctan(1/2))

cos (\frac{π}{2} - arctan (\frac{1}{2})) + i sin (\frac{π}{2} - arctan (\frac{1}{2}))

0.4472135955 + 0.89442 \dots i

Solution steps

cos (\frac{π}{2} - arctan (\frac{1}{2})) + i sin (\frac{π}{2} - arctan (\frac{1}{2}))

Refine to a decimal form

= 0.4472135955 + 0.89442 \dots i

cos (0.3 π)

tan (71.5 7^{\circ})

14 cos (15 0^{\circ})

9 sin (5)

sin (arccos (2))

What is the value of cos(pi/2-arctan(1/2))+isin(pi/2-arctan(1/2)) ?
The value of cos(pi/2-arctan(1/2))+isin(pi/2-arctan(1/2)) is 0.4472135955+0.89442…i