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

Question

Determine the exact value of the expression without using a calculator.

$\cos (\tan^{- 1} (- 5))$

Accepted Answer

$\frac{\sqrt{26}}{26}$

Answer

$\frac{\sqrt{26}}{26}$

Answer

$\frac{\sqrt{26}}{26}$

Answer

$\frac{\sqrt{26}}{26}$

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