Question

If sinA=3/4 calculate cosA and tanA​

Answer 1

p=3x

h=4x

b^2= (h^2 - p^2)

= (4x)^2 - (3x)^2

= 16x^2 - 9x^2

= 7x^2

b= √7 x

cosA = b/h

= √7 x / 4x

= √7 /4

tanA = p/b

= 3x/ √7 x

= 3/√7

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