Question

ਜੇਕਰ secA=13/12ਤਾਂsinA ਦਾ ਮੁੱਲ ਪਤਾ ਕਰੋ।​

Answer 1

$seca = \frac{13}{12} \\ \\ cosa = \frac{12}{13} \\ \\ sina = \sqrt{1 - {cos}^{2} a} \\ = \sqrt{1 - \frac{144}{169} } \\ = \sqrt{ \frac{25}{169} } \\ = \frac{5}{13}$