Question

5 cos A =12 sin A , evaluate:sinA +cosA /2 cosA - sinA ​

Answer 1

Step-by-step explanation:

cos A/ sin A = 12/5

tan A = 12/5

now

sin A + cos A / 2 cosA - sinA

now taking cosA as common in numerator and denominator,

tanA + 1/ 2 - tanA

substitute the value of tanA,

12/5 +1/2 - 12/5

3.4/ -0.4

= - 17/2

Answer 2

Step-by-step explanation:

if 5 cos a = 12 sin a

then the neumarator becomes sin a + 12/5 sin a = 17 sin a

and the denominator becomes

24/5 sin a - sin a = 19 sin a

therefore the answer is 17/19