trigonometry

Related Questions

• The angular elevation of a tower CD at a point A due south of it is 60° and at a point B due west of A, the elevation is 30o. If AB = 3 km, the height of the tower is

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• ${{\sin }^{6}}\theta +{{\cos }^{6}}\theta +3{{\sin }^{2}}\theta {{\cos }^{2}}\theta =$

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• Two straight roads intersect at an angle of 60°. A bus on one road is 2 km away from the intersection and a car on the other road is 3 km away from the intersection. Then the direct distance between the two vehicles is

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• .$\cos 2(\theta +\varphi )-4\cos (\theta +\varphi )\sin \theta \sin \varphi +2{{\sin }^{2}}\varphi =$

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• $\frac{1}{\tan 3A-\tan A}-\frac{1}{\cot 3A-\cot A}=$

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