Answer:
His test IS a solution.
Step-by-step explanation:
Both LHS and RHS are equal so it is a solution.
The expression is x-7 there is no 12 whatsoever mentioned in the question so the options given are wrong. Hope this helps and remember to mark as the brainliest!
Answer:
tanx·secx
Step-by-step explanation:
To simply this, you can begin by factoring sin x out of the numerator to become:
Now, using Pythagorean Trig Identities, we know that sin²x+cos²x equals 1. We can substitute this to make the equation become:
First of all, we can convert to tanx. However, we have a remaining which, using reciprocal identities, will become sec x.
Finally, we get our answer as tanx·secx.
Here it is. You can also use the quadratic equation to find the answer.
Answer:
<1 and <3
<1 and <4
<2 and <1
<2 and <3
Step-by-step explanation:
Find the diagram attached
First know that supplementary angles are angles that sums up to 180degrees. Since the sum of angles on a straight line is also 180degrees, then the pair of supplementary angles must lie on the same straight line.
According to the given diagram, the following angles are supplementary since they lie on the same straight line;
<1 and <3
<1 and <4
<2 and <1
<2 and <3
The sum of all the pair of angles is 180 degrees