Question

If 3 sinA - 4cosA = 0 then find 3sinA + 4cosA

Answer 1

it may help you....................................

Answer 2

Answer:

3sinA- 4cosA=0

3sinA=4cosA

sinA/cosA =4/3

tanA=4/3

sinA=4/5. cosA=3/5 { by making triangle with base

3units and perpendicular 4 we find hypotenuse and with sin and cos ratio}

now 3sinA+4cosA= 3× 4/5 +4×3/5

=24/5