3. Prove that sin/6.cos0 + sin /4.cos /4 + sin/3.cos/6 = 7/4
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Answer:
LHS= sinπ/6.cos0 + sinπ/4.cosπ/4 +sinπ/3.cosπ/6
= (1/2) + (1/√2).(1/√2) + (√3/2).(√3/2)
= (1/2) + (1/2) + (3/4)
= 7/4
= RHS
Step-by-step explanation:
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