If tan230° + cos245° + sin245° + tan260° - x = 5 , find the value of x . |
\(\frac{2}{3}\) \(\frac{3}{2}\) -\(\frac{3}{2}\) -\(\frac{2}{3}\) |
-\(\frac{3}{2}\) |
⇒ tan230° + cos245° + sin245° + tan260° - x = 5 ⇒ (\(\frac{1}{√3}\))2 + (\(\frac{1}{√2}\))2 + (\(\frac{1}{√2}\))2 + (\(\sqrt {3}\))2 - x = 5 ⇒ \(\frac{1}{3}\) + \(\frac{1}{2}\) + \(\frac{1}{2}\) + 3 - x = 5 ⇒ \(\frac{2 + 3 + 3 + 18 - 6x}{6}\) = 5 ⇒ 26 - 6x = 30 ⇒`-4x = 6 ⇒ x = -\(\frac{3}{2}\) |