Question

If A lies in third quadrant and 3tanA -4 =0 then 5sin2A + 3sinA +4cosA is equal to

Answer 1

3tan a -4=0, tan a = 4/3,
A is in third quadrant, then, cos and sin have negative value. (let it there)

Answer 2

ok

Answer 3

the hypotenuse of the triangle is 5, right?

Answer 4

i got it

Answer 5

then , sin2A = 2 sin A cos A

Answer 6

answer is 0 yupiie

Answer 7

i got it tititi

Answer 8

thanks

Answer 9

so that sin A =\(\dfrac{3}{5}\)

Answer 10

ok