Question

if sinA =4/5,then find the values of tan2A? ​

Answer 1

Answer:

sinA = 4/5

sin A = p/h =4/5 b= 3

tanA = 4/3

2 tanA = 2tanA /1-tan^A

2×4/3/1-(4/3)^

8/3/7/9

54/3

HOPE ITS HELP U

Answer 2

Concept: To find the values

Given: A question

Find: The values of Tan 2 A

Solution: As we know,

SinA =4/5

Therefore, the Height = 4 cm

Hypotenuse = 5 cm

Now, According to the Pythagoras Theorem,

Hypotenuse^2 = base^2+height^2

Therefore,

5^2 = base^2+4^2

base^2 = 9

Thus, we know that,

base = 3cm

Now,

tanA = height /base

tan^2A = 4^2/3^2

tan^2A = 16/9

Hence, the correct answer is 16/9

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