Answer:
Choose the first one and second and the last one.
Step-by-step explanation:
This is an simple
Answer: 2a - 3b
You can try rearranging it , it’ll be easier I think :)
3a + 6b - a - 9b
= 3a - a + 6b - 9b
= 2a - 3b
That is False. Please brainiest me!
Answer:
Step-by-step explanation:
As for the angles of both triangles; they’re the same. The sides are 1:2.
I’m giving you formulas that are labeled: side a shortest
” b mid length
” c hypotenuse
angle α(alpha) opposite side a
” β(beta) ” ” b
” γ(gamma) ” ” c
A major formula for rt triangles is: a^2+b^2=c^2.
*Another is: a/sinα=b/sinβ=c/sinγ.
Remember α+β+γ=180°.
As for sides a&b use the above formula.
As for <ACB; the angle is γ which is a rt <.
Given: tan<x=5/2+1/2=6/2=3atan=71.565……….°=β. So α=18.44…….°. γ= rt angle.
To get the sides use the formulas at *.
Answer:
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Step-by-step explanation:
Since we are in quadrant two, cosine value is negative while sine value is positive.
We are going to use the Pythagorean Identity: 
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Since cosine and secant are reciprocals then they will have the same sign as along as they both exist.
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I don't see this answer as I'm going to rationalize the denominator.
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