2
4
V3
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sin 48° sec 42° + cos 48°cos ec42°=
1) o 2) 2 3) 1 4)-1
Jr. Inter/Class XI
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Answer:
2
Step-by-step explanation:
sec 42 = 1/ cos42 = 1/sin(90-42)= 1/sin 48
cosec 42 = 1/cos 48 (same explanation)
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