If sin θ = 1 over 4 and tan θ > 0, what is the value of cos θ? (1 point) Group of answer choices

negative square root of 15 over 4

square root of 15 over 4

square root of 15

negative square root of 15

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

step-by-step explanation:

is their an equation anywhere i can take a   look at it and see if i am right.