7 d^2 +10 when d = 3
2 answers:
Hey. Let me help you out
First, let's rewrite the equation in order to minimize confusion. The way you wrote it makes it hard to vision it.
Now, we just replace the variable d with a value we have.
Three to the power of two is going to equal to 9.
Seven times nine is 63.
Finally, 63 plus 10 is going to be 73.
Answer is 73
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We can see values of angles in degrees first
= 150°
Similarly
= 300°
Now reference angle means positive acute angle they will have
As we can see in attachment 150° lies in second quadrant so its reference angle will be 180°-150° = 30° from x axis line as shown.
Where as angle 300° lies in fourth quadrant so its reference angle will be 360° - 300° = 60° from x axis as shown. So clearly both reference angles are different . So 1st choice " angles donot have same reference angle" best explains it
Choice (2) and (3) are incorrect as tan is positive only in first and third quadrants and angle 300° is in fourth quadrant.
since angle 150° is in second quadrant and 300° is in fourth quadrant so both will have same negative sign so choice (4) is not correct.
So final ansewr is choice (1) "the angles donot have same reference angle"
