If sec a - 2516- find cos a - Maths Q-A

Find the required value.As we know, cos(θ)=1/sec(θ).Therefore, cos(a)=1/sec(a)⇒cos(a)=1/25160ex0ex⇒cos(a)≈ 3.975×10^ 4Hence, the value of cos(a) is 3.975×10^4. ...

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Standard XII

Mathematics

Circular Measurement of Angle

If sec a = 25...

Question

If $s e c (a) = 2516$ , find $\cos (a)$ .

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Solution

Find the required value.
As we know, $\cos (θ) = \frac{1}{s e c (θ)}$ .
Therefore, $\cos (a) = \frac{1}{s e c (a)}$
$\Rightarrow \cos (a) = \frac{1}{2516} \Rightarrow \cos (a) \approx 3.975 \times 10^{- 4}$
Hence, the value of $\cos (a)$ is $3.975 \times 10^{4}$ .

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If sec(a)=2516, find cos(a).

Find the required value.As we know, cos(θ)=1sec(θ).Therefore, cos(a)=1sec(a)⇒cos(a)=12516⇒cos(a)≈3.975×10-4Hence, the value of cos(a) is 3.975×104.

If $s e c (a) = 2516$ , find $\cos (a)$ .

Find the required value.
As we know, $\cos (θ) = \frac{1}{s e c (θ)}$ .
Therefore, $\cos (a) = \frac{1}{s e c (a)}$
$\Rightarrow \cos (a) = \frac{1}{2516} \Rightarrow \cos (a) \approx 3.975 \times 10^{- 4}$
Hence, the value of $\cos (a)$ is $3.975 \times 10^{4}$ .