Question

. If tan A = 3/4 ,then sin A cos A =
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Answer 1

Step-by-step explanation:

Here, tanA = 3/4

We know that, tan A = p/b

so p/b = 3/4

→ p = 3 and b = 4

→ h =√p²+b²

= √(3²+4²)

= √(9+16)

= √25 = 5 units.

sinA = p/h = 3/5

cosA = b/h = 4/5

so, sin A cos A = 3/5 × 4/5

= 12/25