Question

Sec 30 degree + sec 45 degree + sec 60 degree equal to cosec 30 degree + cosec 45 degree + Cos 60 degree

Answer 1

Step-by-step explanation:

As we know,

sec(90 -A)= cosec A

Cosec (90-A)=sec A

Now, change one of any in sec or cosec (in which you want to change)

sec(90-30) +sec(90-45)+sec (90-60)=cosec 30+cosec45 +cosec 60

cosec 30+cosec 45 + cosec 60 =cosec 30 + cosec 45+ cosec 60

,Hence proof

I hope this answer will help you