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(1)Find the area of∆ ABCifC=106.4°,a=7cmandb=13cm.
of the aboveBCDE
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(2)A vectoruwith a magnitude of 150lbsis inclined to the right and upward52from the horizontal. Resolve the vector into components.°BCDE
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(3)A2500kgblock is suspended by two ropes, as shown. Find the tension each rope.(A)|R|≈1420kg,|S|≈1790kg(B)|R|≈1830kg,|S|≈2241kg(C)|R|≈2241kg,|S|≈1830kg(D)|R|≈2475kg,|S|≈1360kgof the above(E)¿RS
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R cos(45) + S cos(60) = 2500R = 2241S = 18304-5True/False. Determine whether the following statement is true or false.Explain your reasoning.(4)For any point(x, y)on the unit circle,¿x, y>¿is a unit vector.of the above(A)True()False()not enoughinformation()¿Solution:True as unit vector has magnitude 1 and lies on unit circle.BCD
(5)When two angles and an included side of a triangle are known, the triangle cannot besolved using the law of cosines.of the aboveBCD