Question

the value of sec(-945⁰) is​

Answer 1

Answer:

minus root 2

Step-by-step explanation:

sec(-945)°=sec(945)°

because sec(-x) is always positive

now,

sec(90×10+45)°=-sec45°

since it comes in the third quadrant and sec is negative in 3rd quadrant

-sec45°=-2^1/2