sumit184 sumit184

07-09-2021
Mathematics

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If sin A=4/5,find the value of 5cos A + 3tan A

Respuesta :

lynnkc2000 lynnkc2000

07-09-2021

Answer:

steps below

Step-by-step explanation:

If A in first quadrant: sin A = 4/5, cos A = 3/5, tan A = 4/3

5cos A + 3tan A = 5 * 3/5 + 3 * 4/3 = 3+4 = 7

If A in second quadrant: sin A = 4/5, cos A = - 3/5, tan A = - 4/3

5cos A + 3tan A = 5 * -3/5 + 3 * -4/3 = -3 + -4 = -7

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