Math, asked by Sanap90127, 3 months ago

if 16 sin Theta =63 cos Theta then find the value of sec Theta and cosec Theta

Answers

Answered by MaheswariS
5

\textbf{Given:}

\mathsf{16\;sin\theta=63\;cos\theta}

\textbf{To find:}

\textsf{The value of}

\mathsf{sec\theta\;and\;cosec\theta}

\textbf{Solution:}

\mathsf{Consider,}

\mathsf{16\;sin\theta=63\;cos\theta}

\implies\mathsf{\dfrac{sin\theta}{cos\theta}=\dfrac{63}{16}}

\implies\mathsf{tan\theta=\dfrac{63}{16}}

\mathsf{We\;know\;that,}

\mathsf{sec^2\theta=1+tan^2\theta}

\mathsf{sec^2\theta=1+\dfrac{3969}{256}}

\mathsf{sec^2\theta=\dfrac{256+3969}{256}}

\mathsf{sec^2\theta=\dfrac{4225}{256}}

\mathsf{sec\theta=\sqrt{\dfrac{4225}{256}}}

\implies\boxed{\mathsf{sec\theta=\dfrac{65}{16}}}

\mathsf{and}

\mathsf{cot\theta=\dfrac{cosec\theta}{sec\theta}}

\mathsf{16/63=\dfrac{cosec\theta}{65/16}}

\implies\mathsf{\dfrac{16}{63}{\times}\dfrac{65}{16}=cosec\theta}

\implies\boxed{\mathsf{cosec\theta=\dfrac{65}{63}}}

\textbf{Find more:}}

If 6 sin²θ + 2 cos²θ=7 sinθcosθ then find the value of tan θ. Class 10

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