Question

4. sin 48° sec 42° + cos 48°cos ec 42°=​

Answer 1

Hii

you are welcome in my answer

sin48/cos42 + cos48/sin42

2(sin48*sin42 + cos48*cos42)/2sin42*cos42

2cos6/sin84

2cos6/cos (90 - 6)

2cos6/cos 6

2

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Hope it may helps you