* Prove that 4 (sin2 300 + cos2 600) - 3 (cos2 450 -tan 450)=7/2
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Step-by-step explanation:
LHS = 4 (sin2 300 + cos2 600) - 3 (cos2 450 -tan 450)
= 4 (sin² 300 + cos² 600) - 3 (cos² 450 -tan 450)
= 4 (sin² - 60 + cos² -60) - 3 (cos² 90 -tan90)
= 4 - 3(0 - TAN90)
4+3tan90
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Answer:
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Step-by-step explanation:
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