If tan (3x + 30°) = 1 then x = ?
(a) 20
(b) 15°
(c) 10°
(d) 5°

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Solution

As we know that,
$\tan 45 ° = 1 Thus, if \tan (3 x + 30 °) = 1 \Rightarrow 3 x + 30 ° = 45 ° \Rightarrow 3 x = 45 ° - 30 ° \Rightarrow 3 x = 15 ° \Rightarrow x = 5 ° Hence, the correct option is (d) .$

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If $tan (3 x + 30) = 1$ then find the value of $x$ .

x^{3} + \frac{1}{x^{3}} = 110

x + \frac{1}{x} =

If \frac{1}{x} : \frac{1}{y} : \frac{1}{z} = 2 : 3 : 5,

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