Home
Class 10
MATHS
sin 2 A = 2 sin A is true when A...

` sin 2 A = 2 sin A ` is true when A = ?

A

`60^(@)`

B

`45^(@)`

C

`30^(@)`

D

`0^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • INTRODUCTION TO TRIGONOMETRY

    OSWAAL PUBLICATION|Exercise TOPIC -1 TRIGONOMETRIC RATIOS : COMPLEMENTARY ANGLES & VALUE (VERY SHORT ANSWER TYPE QUESTIONS)|8 Videos
  • INTRODUCTION TO TRIGONOMETRY

    OSWAAL PUBLICATION|Exercise TOPIC -1 TRIGONOMETRIC RATIOS : COMPLEMENTARY ANGLES & VALUE (SHORT ANSWER TYPE QUESTION)|8 Videos
  • CONSTRUCTIONS

    OSWAAL PUBLICATION|Exercise TEXTBOOK CORNER (EXERCISE 6.2) |1 Videos
  • KARNATAKA SECONDARY EDUCATION EXAMINATION BOARD (MODEL QUESTION PAPER)

    OSWAAL PUBLICATION|Exercise QUESTION|42 Videos

Similar Questions

Explore conceptually related problems

Choose the correct option and justify your choice. (iii) sin 2A = 2 sin A is true when A=

Find the value of sin ( 2 cos^(-1) x + sin^(-1) x) " when " x = 1/5

With the usual notation in the triangle A B C [[ 1 , 1 , 1 ],[ sin A , sin B , sin C ],[ sin ^2 A , sin ^2 B , sin ^3 C ]] =

Prove that: (sin A + cos A)/(sin A - cos A) + (sin A - cos A)/(sin A + cos A) = (2)/(sin^(2)A-cos^(2)A)=(2)/(2sin^(2)A-1)=(2)/(1-2 cos^(2)A) .

If 3 sin 2 theta=2 sin 3 theta and 0 lt theta lt pi then sin theta=

( sin ^ 2 63 ^@ + sin ^ 2 27 ^@ ) /( cos ^ 2 17 ^@ + cos ^ 2 73 ^@ ) = ?

If sin A = cos A , find the value of 2tan^(2)A + sin^(2)A +1 .

If sin A + sin^(2)A + sin^(3)A =1 , then , prove that cos^(6) A - 4 cos^(4) A + 8 cos^(2) A =4 .

int (sin 2x +cos 2x) dx = 1/sqrt2 sin (2x-a) then a =

Number of solutions of the equation sin^(4) x-cos^(2)x sin x + 2 sin^(2) x+sin x=0 in 0 le x le 3pi is ________.