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Basin lister is used to form listed furrows (broken furrows with small dams and basins) to prevent free runoff of rainfall and blowing off the soil in low rainfall areas.
If tan A = 1 and tan B = √ 3, what is the value of cos A . cos B - sin A . sin B?
If 4cos2x - 3 = 0, and (0° > x > 90°), then find the value of 'x'.
A point P is 15 meters away from the base of a building. The angle of elevation to the top of the building is 60°, while the angle of elevation to the ...
Find the value of tan(75°) using the identity for tan(A+B).
sin2 12˚ + sin2 14˚ + sin2 16˚ + sin2 18˚ + ……… + sin2 78˚ =?
If 9 sinx + 40 cosx = 41 then find tanx.