3\sqrt{2}
2\sqrt{3}
\sqrt{3}
\sqrt{2}
Correct answer is C
\tan (x - y) = \frac{\tan x - \tan y}{1 + \tan x \tan y}
\implies \frac{\tan 80 - \tan 20}{1 + \tan 80 \tan 20} = \tan (80 - 20) = \tan 60°
\tan 60 = \frac{\sin 60}{\cos 60} = \frac{\sqrt{3}}{2} ÷ \frac{1}{2}
= \sqrt{3}
If f(x) = \frac{4}{x} - 1, x \neq 0, find f^{-1}(7)....
QRS is a triangle such that \overrightarrow{QR} = (3i + 2j) and \(\overrightarrow{SR} = (-5i + 3...
Which of the following sets is equivalent to (P \cup Q) \cap (P \cup Q')?...
Express \frac{1}{1 - \sin 45°} in surd form. ...
Find the coordinates of the point in the curve y = 3x^2 - 2x - 5 where the tangent is parallel t...
In how many ways can four Mathematicians be selected from six ? ...
If \sin x = -\sin 70°, 0° < x < 360°, determine the two possible values of x....
Given that P and Q are non-empty subsets of the universal set, U. Find P \cap (Q U Q`)....