The approximate value of $\cos 31^{\circ}$ is

JEE MATHEMATICS MCQ: ERRORS & APPROXIMATION

1 Easy

1 of 1

Application +4 | -1

The approximate value of

\cos 31^{\circ}

View answer and explanation

Correct option: B

0.851

Option B (0.851) is correct because it is the approximate value of

\cos 31^{\circ}

calculated using the derivative of the cosine function near

\cos 30^{\circ}

Practice All Chapter MCQs →

\log _{10} 2=0.3010

\log _{10} 3=0.4771

\left(\frac{5}{3}\right)^{-100}

1 \%

\triangle A B

\alpha

C

\sqrt[3]{{28}}

\alpha \%

1:2

\lambda \%