cos38cos52-sin38sin52=0
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Answer:
hey mate please refer to the attachment
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Answer:
cos38 cos52-sin38 sin52=0
Step-by-step explanation:
cosA cosB-sinA sinB=cos(A+B)
Now
cos38 cos52-sin38 sin52=cos(38+52)
=cos(90)
= 0
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