Question

2 sin 23º. cos 7° + 2 cos 23º. sin 7° ?​

Answer 1

Answer:

=COS^2 67°-SIN^2 23°

=COS^2 (90°–23°)-SIN^2 23°

=SIN^2 23°-SIN^2 23°

=0

Answer 2

ans is 1

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