Chapter 7: Problem 52
Determine whether the statement is true or false. Justify your answer. If a triangle contains an obtuse angle, then it must be oblique.
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Chapter 7: Problem 52
Determine whether the statement is true or false. Justify your answer. If a triangle contains an obtuse angle, then it must be oblique.
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Find the magnitude and direction angle of the vector v.$$\mathbf{v}=-2 \mathbf{i}+5 \mathbf{j}$$
Find the square roots of the complex number. $$2+2 i$$
Find the square roots of the complex number. $$1+\sqrt{3} i$$
Use DeMoivre's Theorem to find the indicated power of the complex number. Write the result in standard form. $$\left[6\left(\cos 15^{\circ}+i \sin 15^{\circ}\right)\right]^{4}$$
Determine whether u and v are orthogonal, parallel, or neither. $$\begin{aligned} &\mathbf{u}=-\frac{3}{5} \mathbf{i}+\frac{7}{10} \mathbf{j}\\\ &\mathbf{v}=12 \mathbf{i}-14 \mathbf{j} \end{aligned}$$
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