
Mark M. answered 07/25/19
Tutor
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(243)
Mathematics Teacher - NCLB Highly Qualified
sin2 θ + cos2 θ = 1
(1/4)2 + cos2 θ = 1
1/16 + cos2 θ = 1
cos2 θ = 15/16
cos θ = √15 / 4
Alyssa R.
asked 07/25/19Mark M. answered 07/25/19
Mathematics Teacher - NCLB Highly Qualified
sin2 θ + cos2 θ = 1
(1/4)2 + cos2 θ = 1
1/16 + cos2 θ = 1
cos2 θ = 15/16
cos θ = √15 / 4
sin14.47=1/4
cos=.968245......
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