Question

if CosA=12÷13 then define the value of tan2A
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Answer 1

Answer:

Tan A=5/12

Step-by-step explanation:

cos A = 12/13

cos = Adjacent side / Hypotenuse

(Hypotenuse)^2 = (Opp. side)^2 + (Adj. side)^2

13^2 = (Opp.side)^2 + 12^2

169 = (Opp.side)^2 + 144

(Opp side)^2 = 169-144

Opp. side = √25

Opp.side = 5

Sin A = Opposite Side / Hypotenuse

Sin A = 5/13

Tan A = Opposite Side / Adjacent Side

Tan A = 5/12

Answer 2

Answer:

cos A = B/H = 12/13

tan A. = P/H = 5 / 12

tan 2A = 5/12 × 2 = 5/6