Question

if sin A =3/4 find cos A and tan A​

Answer 1

Step-by-step explanation:

sin A = 3/4

(sinA )^2 + ( cos A ) ^2 = 1. ... ( identity )

(3/4)^2. + (cos A)^2 = 1

9/16. + ( cos A) ^ 2= 1

cos A ^2. = 1-9/16

cos A ^2. = 16-9/16

cos A ^2. =. 2√2 / 4 taking squareroot

tan A = sin A / cosA

= 3/4 × 4/ 2

tanA= 3/2√2

Answer 2

Answer:

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