The legs of a right triangle measuring 5 inches and 7 units. If theta is the angle between the 5-inch leg and the hypotenuse, cos theta = ..what?

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asked Feb 2, 2017 192k views

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Reeno · Answer 1 · 2017-02-07T04:35:56+0000

By Pythagorean's theorem, a^2 + b^2 = c^2
5^2 + 7^2 = c^2
74 = c^2
c = sqrt(74)
So, now we know that the answer is 5/sqrt(74).
This can also be written as (5sqrt(74))/74

The legs of a right triangle measuring 5 inches and 7 units. If theta is the angle between the 5-inch leg and the hypotenuse, cos theta = ..what?

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