It could be in quadrant I or III
Since I is all positive and III is all negative
ANSWER
EXPLANATION
The given triangle has a right angle.
The side opposite to the 45° angle is 7 units.
To find angle x, we use the tangent ratio.
Recall the mnemonics TOA, which means,
To find y, we use the sine ratio, which means
To find the area of the shaded piece, subtract the square area to the area of the sector.
<span>6 × 6 − <span>1/2</span><span>r^2 0</span></span>Subtract <span>☇
</span>36−1/2(6)2pi/2
☇
<span>36−<span>1/2</span>(6<span>)2</span><span><span>pi/</span>2
</span></span>☇
7.722 <span>✔
The area is 7.722. </span><span>✩</span>
It's 139 because you divide 347.5 by 2.5 = 139
