Question

find the value of 3sec (-7π/4)​

Answer 1

Step-by-step explanation:

3sec(-7×180/4)

3sec(-1260/4)

3sec(315)

3sec(360-15)

3sec15

3×2/root3

6/root3

Answer 2

Answer:

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Step-by-step explanation:

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant.

sec

(

π

4

)

The exact value of  

sec

(

π

4

)

is  

2

√

2

.

2

√

2

Multiply  

2

√

2

by  

√

2

√

2

.

2

√

2

⋅

√

2

√

2

Combine and simplify the denominator.