construction of triangles
construct a
triangle given its base
arm of other two sides LA = 65:
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19. Three lenses in contact have a combined focal length of 12 cm. When the third lens is removed, the combined focal length is 60/7 cm. The third lens is
(1) A converging lens of focal length 30 cm
(2) A converging lens of focal length 60 cm
(3) A diverging lens of focal length 30 cm
(4) A diverging lens of focal length 60 cm
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Construction 11.4 : To construct a triangle, given its base, a base angle and sum of other two sides....,....
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