Question

if sin theta is equal to 4 by 5 find the value of sin theta tan theta minus 1 upon 2 tan square theta

Answer 1

HEY DEAR,

HERE IS YOUR ANSWER.......

IF SIN THETA = 4/5  

THEN IN TRIANGLE ABC ,  TRIAD IS OF : 4 , 5, 3

    TAN THETA =  4/3

HENCE, WE NEED TO FIND THE VALUE OF:

=> { SIN THETA(TAN THETA) - 1}/2 TAN^2 THETA

=> ( 4/5)(4/3) -1}/ 2 (16/9)

=> {16/15 - 1} / 32/9

=> (1/16)/(32/9)

=> 9/(16*32)

=> 9/512 ..........................(ANS.)

HOPE IT HELPS YOU....

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THANKS..

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Answer 2

look in attachment .