3 years ago

I'll give brainlliest to whoever anwsers

Mathematics

1 answer:

postnew [5]3 years ago

8 0

Answer:

Step-by-step explanation:

booom

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3 years ago

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Multiply the following equation

11111nata11111 [884]

Answer:

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Step-by-step explanation:

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3 years ago

Which of the following is equal to tan θ using coordinates on the unit circle? Question 18 options: A) x∕y B) y C) y∕x D) x

kramer

Answer:

Solution given

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Step-by-step explanation:

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3 years ago

Consider the proof. Given: In △ABC, BD ⊥ AC Prove: the formula for the law of cosines, a2 = b2 + c2 – 2bccos(A) Statement Reason

loris [4]

Solution: The missing reason in Step 8 is substitution of $x=c\cos (A)$ .

Explanation:

The given steps are used to prove the formula for law of cosines.

From step 5 it is noticed that our equation is

$a^2=b^2-2bx+c^2$ ..... (1)

From step 7 it is noticed that the value of $x$ is $c\cos (A)$ .

So by substituting $c\cos (A)$ for $x$ in equation (1) we get the equation of step 8, i.e.,

$a^2=b^2-2bc\cos (A)+c^2$

Hence, the missing reason in Step 8 is substitution of $x=c\cos (A)$ .

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3 years ago

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