Question

if tan A =3/4 show that sin A. cosA=12/25​

Answer 1

Answer:

$\huge\underline\bold\red{Answer!!}$

$<font color="blue">$tanA = 3/4 ⇒ p/b = 3/4 ⇒ p = 3k & b = 4k

Therefore, h=√(3k)² + (4k)² = 5k

Hence, sinA cosA = p/h×b/h = pb/h² = (3k×4k)/25k² = 12k²/25k² = 12/25

Answer 2

Step-by-step explanation:

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