Dowling, L. Wayland (Linnaeus Wayland), b. 1867, Turneaure, F. E. (Frederick Eugene), 1866- · New York, H. Holt and company · leaf 45
ult. Draw the figure. 2. If 0 is the pole, show that the area of the triangle OP1P2 is 1 rir2 sin (6I2 - di)-,where Pi = (n, Oi) and P2= (r2, dt). 3. If Pi =[5, -j and P2= (3, - 30°), find the area of OP1P2. 4. Given Pi = (3, - 60°) and P2= (3, 4), find the area of OP1P2. 5. When the segment P1P2… … Fig. 22 20. Area of a triangle, vertices in any position. Join the ver-tices of the triangle to the origin 0. Let P^, P^, P^ (Fig. 22) bethe vertices, taken in counterclockwise order about the triangle.The area of P^P^P^ is then given by the formula area PiP-zP^ = area OP1P2 + area OPiP^ + area…
Geometry, Analytic
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