Question

sec 0° = 1 .why ?
please reply soon and reply only correct solution​

Answer 1

Answer:

$\cos(0) = 1 \\ \sec(0 )= \frac{1}{ \cos(0) } \\ \sec(0) = 1$

hope this will help you

Answer 2

Method 1

cos 0° = 1

sec ∅ is reciprocal of cos ∅.

So,

sec 0° = 1

Method 2

sec 0° means a right angled triangle with no perpendicular or perpendicular of length zero.

So, base will be equal to hypotenuse.

Hence, sec 0° = 1 = Hypotenuse / Base

Thank you.