Cos- Sin= route 2 Sino
find cos +sin
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Answer:
sin+cos=√2 cos
Step-by-step explanation:
cos-sin=√2 sin
=cos=√2 sin+sin
=cos=sin(√2+1)
=cos-sin(√2+1)×[√2-1/√2-1]
=[√2-1]cos=sin(2-1)
=√2cos-cos=sin
=sin+cos=√2cos
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