Question

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Answer 1

Answer:

IT IS NOT A PART OF ENGLISH

Explanation:

PLEASE WRITE RIGHT SUBJECT

Answer 2

cos teta-isin teta

Explanation:

((cos teta+ isin teta) whole power 4).((cos teta-isin teta)whole power3)

=((( cos teta+ isin teta )while square)whole square)).((cos teta-isin teta)whole power3)

= (( 1)square) ((( cos teta-isin teta)whole square )cos teta-isin teta)

=1×1×1( cos teta - sin teta)

=cos teta-isin teta