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Trigonometric Functions, Reference Angles, Quadrantals, help?

I don't understand this for some reason. Can someone please explain how you got the answer to these two problems???

Find the exact value of the trigonometric function.

sin 3π/2

tan 5π/2

1 Answer

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  • 1 decade ago
    Favorite Answer

    The arguments are in rad unit.

    The values of trigonometric functions for angles fractions or multiples of P (greek p) are base values: i.e. sin P/2 = 1 ; sin P = 0 ; sin 3P/2 = -1 ; sin 2P = 0

    sin 3P/2 = -1

    tan 5P/2 = tan (5P/2 - 2P) = tan P/2 = infinite

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