Question

2
4
V3
13
sin 48° sec 42° + cos 48°cos ec42°=
1) o 2) 2 3) 1 4)-1
Jr. Inter/Class XI​

Answer 1

Answer:

2

Step-by-step explanation:

sec 42 = 1/ cos42 = 1/sin(90-42)= 1/sin 48

cosec 42 = 1/cos 48 (same explanation)