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2 years ago

Find the value of x.x=?please hurry I will mark brainliest if correct!

Mathematics

1 answer:

larisa [96]2 years ago

5 0

Answer: 45

Step-by-step explanation:

A right isosceles triangle can only ever have two equal sides, since he sum of the three angles of any triangle is equal to 180 degrees, do the quick math of 180 - 90 = 90, then 90/2 = 45. Both remaining angles of the triangle are 45 degrees, including x, and when you add all angles together 90 + 45 + 45 it equals 180 degrees.

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Ne4ueva [31]

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3 years ago

HELP ON THIS PROBLEM!! Solve the following 0deg< x< 360deg: cos x= cos 2x

blsea [12.9K]

Answer:

$x=0^\circ,120^\circ,240^\circ,360^\circ$

Step-by-step explanation:

Use identities to set the equation up as a quadratic

$\cos x=\cos 2x;\:0^\circ \leq x \leq 360^\circ\\\\\cos x=2\cos^2 x-1\\\\0=2\cos^2 x-\cos x-1$

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$0=u-1\\\\0=\cos x-1\\\\1=\cos x\\\\0^\circ,360^\circ=x$

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2 years ago

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emmasim [6.3K]

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3 years ago

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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago

Find the value of x.x=?​please hurry I will mark brainliest if correct!

Find the value of x.x=?please hurry I will mark brainliest if correct!