Write the expression as a sine or cosine of angle sin pi/5 cos pi/2 + sin pi/2 cos pi/5

asked Mar 7, 2023 186k views

21 votes

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3 votes

Answer:

(cos(π) sin(π))/(2 5) + (cos(π) sin(π))/(5 2) = 1/5 cosh(i π) cos(-π/2)

Explanation:

Rysv answered Mar 10, 2023

by Rysv

6.9k points

5 votes

Answer:

sin 7π/10

Explanation:

Amenoire answered Mar 13, 2023

6.6k points

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