Question

Find tan θ if cos θ = one divided by four and sin θ < 0.

negative square root of fifteen

4

negative square root of fifteen divided by fifteen

negative square root of seventeen

Answer 1

@geekfromthefutur @Griff85000 @mathmath333 any help on this one?

Answer 2

@gorv help?

Answer 3

cos theta =1/4

Answer 4

cos theta = base / hypotenuse=1/4

Answer 5

base=1
hypotenuse=4
perpendicular=\[\sqrt{4^2-1^2}=\sqrt{16-1}=\sqrt{15}\]

Answer 6

sin theta = perpendicular /hypotenuse = sqrt15/4
as sin theta < 0
sin theta = - sqrt15/4

Answer 7

tan = sin/cos

Answer 8

=-(sqrt15/4)/(1/4)=-sqrt15

Answer 9

first one

Answer 10

You are literally the best :) can I have your help with just one more?

Answer 11

@gorv

Answer 12

post the new Q

Answer 13

Okay.