Solution of Right Angled Triangle
Solution of Right Angled Triangle
The triangle which consists three sides and three angles with six elements is known as right angled triangle. In right angle triangle one angle is 90. If three elements are given, one of which must be the side and remaining others elements can be calculated which is known as solution of right angle triangle.
Let,
In a given figure, right angled triangle ABC, right angled at B, ∠A, ∠B and ∠C represent the angles and a, b and c represent their opposite side. Then ΔABC, using pythagoras theorem,
AC^{2} = AB^{2} + BC^{2}
i.e, b^{2}= c^{2}+ a^{2}
and ∠A + ∠C = 90°
 The triangle which consists three sides and three angles with six elements is known as right angled triangle.
 In right angle triangle one angle is 90.

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gaurinaA man on the top of a cliff 90m high observes a boat on the river and finds the angle of depression to be 60°. How far is the boat from the cliff? 
Jan 03, 2017 
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