Question

Sin a=cos a
Find value of 2 tan a+cos a

Answer 1

Answer:

Sin a = cos a

hence a = 45°

then 2tan 45 +cos45 = 2+ 1 = 3 answer....

Answer 2

tan a=sin a/cos a

cos a=sina

tan a=sin a/sina

tan a=1

tan a=tan 45

a =45

2 tan a+cos a

2 ×1+cos 45

$2 + \frac{1}{ \sqrt{2} }$

$\sqrt{2 } = 1.414$

2+0.707

2.707