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very very nice thank you

ABCD is a square of side 10 unit. Arc of circles with centres at ABCD are drawn in. find the area of the central region bounded by the four arcs

nice thanks:spin:

find sum sin 1+sin 2+ sin 3+...+sin 359

Is the answer 4005? yes :) very good but how

17 min is rite

19 minutes? no it is not true

Four people, A, B, C, and D, are on one side of a bridge, and they all want to cross the bridge. However, it's late at night, so you can't cross without a flashlight. They only have one flashlight. Also, the bridge is only strong enough to support the weight of two people at once. The four...

1. Find the value of tan²1+ tan²3+.. ...+tan² 89. 2.Find the ordered pairs x and y where x and y are real numbers such that x and y satisfy the two equations below. (1/sqrt x)+(1/sqrt y)=(x+3y)(3x+y) (1/sqrt x)-(1/sqrt y)=2 (y^2-x^2)