Question

Q.19.If cos A = 4/5, then tan A = ? *

(A) 3/5

(B) 3/4

(C) 4/3

(D) 4/5

Q.20. Given that: SinA = a

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Answer 1

Answer:

Given, cosA=

<br>

<br>

<br> Now,

<br> Hence, the required value of tan A is

Answer 2

Answer:

this is your answre

Step-by-step explanation:

we all know that

cos A - land/ hypotenuse

so, land = 4 and hypotenuse = 5

so , orthographic = √ (5^2 - 4^2)

=√(25 -16)

=√9

= 3

and , tan A = arthographic/land

so, the answre is tan A = 3/4

and , sin A = arthographic/hypotenuse

so , the answre is sin A = 3/5

Thank you .