23. Using the definition of vector product, prove the law of sines for plane triangles of sides a, b, and c. Scalars and Vectors problem no 23. Sindh Textbook Board (stb) problems

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July 05, 20230 minute read

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23. Using the definition of vector product, prove the law of sines for plane triangles of sides a, b, and c.

(law of sines using vector product stb)

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24. If r1 and r2 are the position vectors (both lie in xy plane) making angles θ1 and θ2 with the position x-axis measured counterclockwise, find their vector product when: (i) r1 = 4cm with θ1 = 30° r2 = 3cm with θ2 = 90° (ii) r1 = 6cm with θ1 = 220° r2 = 3cm with θ2 = 40° (iii) r1 = 10cm with θ1 = 20° r2 = 9cm with θ2 = 110° Scalars and Vectors problem no 24. Sindh Textbook Board (stb) problems
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22. Determine the unit vector perpendicular to the plane A = 2i - 6j - 3k and B = 4i + 3j - k. Scalars and Vectors problem no 22. Sindh Textbook Board (stb) problems

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