Question

The acute angles in a right triangle are θ
and ϕ
. If sinϕ=0.25
, what is cosθ
?(1 point)
Responses

0.25
0.25

0.75
0.75

0.65
0.65

0.55
0.55
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Answer 1

In a right triangle the acute angles are complementary, so θ = 90° − ϕ and cosθ = sinϕ. Given sinϕ = 0.25, cosθ = 0.25.