The minimum value of (8sec^2 + 2cos^2 ) is equal to :- - Vidyadip

MCQ

The minimum value of $(8sec^2 \theta + 2cos^2 \theta)$ is equal to :-

✓
$10$
B
$16$
C
$8$
D
None

✓

Answer

Correct option: A.

$10$

a
Minimum value occurs
at $\theta = 0^o$
$8 + 2 = 10$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from 3. trignometrical ratios,functions and identities→3. trignometrical ratios,functions and identities — all question types→MATHS STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

If angles made by lines $x^2 -4xy -y^2 = 0$ with positive direction of $x-$ axis are ${\theta _1}$ and ${\theta _2}$ then the value of ${\sec ^2}\left( {{\theta _1} + {\theta _2}} \right) + \left| {\frac{1}{{\tan\, {\theta _1}}} + \frac{1}{{\tan \,{\theta _2}}}} \right|$ is

A circle is inscribed in an equilateral triangle of side $a$, the area of any square inscribed in the circle is

Let $z$ be a complex number satisfying $|z - 5i|\, \le 1$ such that amp $z$ is minimum. Then $z$ is equal to

Which of the following statements is a conjunction?

If $1+5+12+22+35+...\text{to}\text{ n }\text{terms}=\frac{\text{n}^2(\text{n+1)}}{2},\text{nth }$teram of series is:

Choose the correct answer.If A and B are coefficient of $x^n$ in the expansions of $(1 + x)^{2n}$ and $(1 + x)^{2n – 1}$ respectively, then $\frac{\text{A}}{\text{B}}$ equals:
Hint: $\frac{\text{A}}{\text{B}}=\frac{^{2\text{n}}\text{C}_\text{n}}{^{2\text{n}-1}\text{C}_\text{n}}=2$

The number of numbers between $2,000$ and $5,000$ that can be formed with the digits $0, 1, 2, 3, 4,$ (repetition of digits is not allowed) an are multiple of $3$ is?

At 3 : 40, the hour and minute hands of a clock are inclined at:

If ${^\text{20}}\text{C}_{3\text{r+1}}={^\text{20}}\text{C}_{\text{r-1}},$ is then r equal to:

A test consists of $6$ multiple choice questions, each having $4$ alternative ans wers of which only one is correct. The number of ways, in which a candidate answers all six questions such that exactly four of the answers are correct, is