17. TRIGONOMETRY

Find the size of angle PQR. In the triangle, AB = 19m, BC = 35m and . angle ABC = 900. Find the size of angle AC. The road sign means that if a road AB is 100 m then BC is 25 m. Calculate the angle which the road makes with the horizontal. Mixed Exercise. In triangle ABC, angle ACB = 90°, the lengths . ................
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