Question

if tan A = 3/4 ,
find the value of cos A.​

Answer 1

Answer:

tan A = 3/ 4

as we know tan = p(perpendicular)/B(BASE)

for cos A we need to find base

as cos A = B( BASE)/H(HYPOTENUSE)

BY PYTHAGORAS THEOREM

HYPOTENUSE²= BASE² + HEIGHT ²

H² = 4² + 3² ( as perpendicular is the height)

H² = 16 + 9

H² = 25

H = √25

H = 5

THEREFORE, COS A = B/H

= 4/5

Step-by-step explanation:

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