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Evaluate: Sin 18° _________ Cos 72°

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Evaluate: Sin 18° _________ Cos 72°

    • Posted by Sakshi Saxena 6 years, 11 months ago

    CBSE > Class 10 > Mathematics
    • 2 answers

    Chetna Saini 6 years, 11 months ago

    Sin 18°upon cos 72° Sin changes to cos So ,sin(90°-18°) upon cos 72° Sin will change to cos 72 °upon cos72° Then cos 72° will cancel with cos72° The answer will be (1)

    1Thank You

    Pooja Nangliya 6 years, 11 months ago

    Answer is zero (0)

    1Thank You

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