cos²67°-sin²23°? What is the value
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Cos²67 - Sin²23
Sin² ( 90 - 67 ) - Sin² 23
Sin² 23 - Sin ² 23
= 0
Sin² ( 90 - 67 ) - Sin² 23
Sin² 23 - Sin ² 23
= 0
AMANPATHAK1:
thx
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