MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Trigonometric Equations

Given: 2 co...

Question

Given: $2 c o s 2 A = 1$
Find A in degrees

Open in App

Solution

$2 c o s 2 A = 1$
$c o s 2 A = \frac{1}{2}$
$c o s 2 A = c o s 60$
$2 A = 60$
$A = 30^{\circ}$

Suggest Corrections

thumbs-up

0

Similar questions

Q. Find the sum of the values of

∠ A

(in degrees), if

2 {cos}^{2} A - 3 cos A + 1 = 0

2 c o s 2 A = \sqrt{3}

and A is acute, find :

\sqrt{3} t a n A = 1

Find A in degrees

sin (45^{o} + A) . sin (45^{o} - A) - \frac{1}{2} cos 2 A

t a n 3 A = 1

Find A in degrees

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Introduction

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Trigonometric Equations

Standard XII Mathematics

Join BYJU'S Learning Program

CrossIcon