Cosine of a basic angle of an isosceles triangle is 1⁄2, while...

if you the cosine of a angle can you determine the measure of the angle

What is the cosine of the angle between two adjacent faces of a regular tetrahedron? (We define the...

the angle y whose cosine is -sqrt2/2 and which is in the interval [0, pi] is y = x radians

If the cosine of an angle θ is 1√2 , what is θ ? You may assume that 0°≤θ≤180° . (1...

What is the cosine for an angle that has a sine of 4/17√ and is in Quadrant I? Use the Pythagorean i...

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