Question

Sin(-1785°) express the following as functions of angles less than 45°

Answer 1

Given :  Sin(-1785°)

To find : express functions of angles less than 45°

Solution:

As we know adding or subtracting multiple of 360° does not make any difference

Sin (-1785°) = Sin( -1785°    + 360° x 5)

=> Sin (-1785°) = Sin( -1785°    + 1800°)

=> Sin (-1785°) = Sin( 15°)

15°  is less than 45°

Hence Sin (-1785°)  = Sin( 15°)

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Answer 2

I hope it will help you!:)