determine-the-exact-value-of-the-expression-without-using-a-calculator-costan15c

Question

Determine the exact value of the expression without using a calculator.cos⁡(tan⁡−1(−5))\cos\left(\$$tan^{-1}$$\left(-5\right)\right)

Accepted Answer

2626\frac{\sqrt{26}}{26}

Answer

−52626-\frac{5\sqrt{26}}{26}

Answer

526\frac{5}{26}

Answer

5626\frac{5\sqrt6}{26}

Determine the exact value of the expression without using a calculator.cos(tan−1(−5))\(\cos\)\(\left\)(\(\tan\)^{-1}\(\left\)(-5\(\right\))\(\right\))