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26 October, 11:01

If sin a + b is equal to sin a * cos b + cos a * sin b then find the value of:

a) sin 75degree

b) cos 15 degree

+3
Answers (1)
  1. 26 October, 12:25
    0
    1

    Explanation:

    sin

    15

    °

    cos

    75

    °

    +

    cos

    15

    °

    sin

    75

    °

    =

    sin

    (

    15

    °

    +

    75

    °

    )

    =

    sin

    (

    90

    )

    =

    1
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