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The trigonometric equation sin^{1} x = 2 sin ^{1} a has a solution for
Out of given four options none is absolutely correct
If is equal to
⇒ 4  y^{2} 4x^{2}+ x^{2}y^{2}
= 4 cos^{2} α + x^{2} y^{2}  4 xy cosα
⇒ 4 x^{2} + y^{2}  4 xy cosα = 4 sin^{2}a .
then the values of x is
The value of cot
If x, y, z are in A.P. and tan^{–1}x, tan^{–1}y and tan^{–1}z are also in A.P., then
Since, x, y, z are in A.P. ⇒ 2y = x + z
Also, we have, 2 tan^{–1} y = tan^{–1}x + tan–1 (z)
where Then a value of y is :
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