trigonometry

Related Questions

• If in a triangle ABC, angle C is ${{45}^{o}}$ , then $(1+\cot A)(1+\cot B)=$

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• A tower subtends an angle of 30° at a point distant d from the foot of the tower and on the same level as the foot of the tower. At a second point h vertically above the first, the depression of the foot of the tower is 60°. The height of the tower is

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• In$\Delta ABC,$ a$\sin (B-C)+b\sin (C-A)+c\sin (A-B)=$

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• $\frac{\sin 3A-\cos \left( \frac{\pi }{2}-A \right)}{\cos A+\cos (\pi +3A)}=$

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• In$\Delta ABC,$ if $2(bc\cos A+ca\cos B+ab\cos C)=$

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