HELP ASAP !!! Which of the following are identities? Check all that apply.

Mathematics

2 answers:

Lady_Fox [76]3 years ago

8 0

Answer:

they should all be checked

Step-by-step explanation:

ap3x

anastassius [24]3 years ago

6 0

Answer:

A,CAND D

Step-by-step explanation:

ADD ME AS BRAINLIEST

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Angle x + 16 and Angle 4x - 5. They are vertical angles. Solve for x and the measure of the two angles.

inna [77]

Answer:

Vertical angles are congruent and have equal measures. Therefore,

Simplify and solve for x :

x + 16 = 4x -5.

16=3x-5

21=3x

x=7

Thus the angles measure is x+16 = 7+16 = 23 degrees, for both angles (for each of the two vertical angles).

Step-by-step explanation:

each angle measure is 23 degrees

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State and prove De Moivre's theorem

Montano1993 [528]

Answer:

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2 years ago

Suppose ABC is a right triangle with sides a, b, and c and right angle at C. Find the unknown side length using the Pythagorean

Leno4ka [110]

Answer:

a = $\sqrt{7}$

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.:

<em>Suppose ABC is a right triangle with sides a, b, and c and right angle at C. Find the unknown side length using the Pythagorean theorem and then find the values of the six trigonometric functions for angle B. when b=3 and c=4</em>.

My answer:

We will Pythagoras theorem, which states that the sum of squares of two legs of a right triangle is equal to the square of the hypotenuse of right triangle. Because the question says that ABC is a right triangle.

$a^2+b^2=c^2$