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9.
sin 15° - coss 150
का मान ज्ञात कीजिए।
sin 15° - cos15°
Answers
Answered by
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Step-by-step explanation:
SIN 15° - COS 15°
COS ( 45 - 30 ) - SIN ( 45 - 30 )
COS ( A - B) = COS A. COS B - SIN A. SIN B
SIN ( A - B) = SIN A COS B - COS A SIN B
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