Question

cos theta =10/26 , theta lies in IV quadrant

help me find the sin 2theta, cos 2theta, tan 2theta ?

Answer 1

i believe there is no square

Answer 2

here is the actual question

Answer 3

aha

Answer 4

sorry about that but yeah its okay

Answer 5

ok

Answer 6

use Trigonometric Identities

Answer 7

sin(2x) = 2 sin x cos x ,cos(2x) = cos^2(x) - sin^2(x), tan(2x) = 2 tan(x) / (1 - tan^2(x))

Answer 8

thanks man and i got sin 2theta =120/169 , cos 2theta= -119/169 and for than 2theta = 60/119 .. is this right ?

Answer 9

tan 2theta not correct