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3 years ago

Help me please just need this last one and I’ll be done please help me if you can

Mathematics

1 answer:

Lemur [1.5K]3 years ago

7 0

Answer:

58°

Step-by-step explanation:

Start with the equation 2x + 2 + 90 = 148

( I got the 90 from Angle B since it is a right angle.)

Combine like terms 2x + 92 = 148

( 90 and 2 didn't have variables so you could add them together.)

Subtract 92 from both sides 2x + 92 = 148

-92 -92

(The opposite of addition is subtraction.)

Now write out the new equation 2x = 56

Divide both sides by 2 $\frac{2x}{2}$ = $\frac{56}{2}$

You'll end up with... x = 28

To find the measure of angle BAC, plug in 28 where the x value is 2(28) + 2

This gives you the answer 58°

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If you're using the app, try seeing this answer through your browser: brainly.com/question/2862279

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Simplify the trigonometric expression.

Call the expression E:

$\mathsf{E=\dfrac{sin\,\theta}{\sqrt{1-sin^2\,\theta}}\qquad\qquad(but~~1-sin^2\,\theta=cos^2\,\theta)}\\\\\\
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$\mathsf{\dfrac{sin\,\theta}{\sqrt{1-sin^2\,\theta}}}=\left\{\!
\begin{array}{rl}
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I hope this helps. =)

Tags: simplify trigonometric trig expression sine cosine tangent sin cos tan absolute value modulus trigonometry

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