Question

if 5cos theta - 4=0 then find , (1) sin theta ​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

$\: cos tetha = -4/5 </p><p>sin tetha = 3/5 </p><p>by taking L.H.S . </p><p> tan tetha = sin tetha / cos tetha </p><p> 1+ tan ^2 tetha = 1+ sin ^2 tetha / cos ^2 tetha </p><p>by solving it we get </p><p>sin tetha * cos tetha </p><p>by taking R.H.S. </p><p>sin tetha / sec tetha </p><p>sec tetha = 1/cos tetha </p><p>by solving we get ; </p><p>sin tetha * cos tetha </p><p>L.H.S = R.H.S.</p><p>Hence proved$