Question

If sin A = 34 , calculate cos A and tan A​

Answer 1

Answer:

sin A =

4

3

By pythagoras theorem,

(Hypotenuse)

2

=(Base)

2

+(Perpendicular)

2

Therefore,

(4)

2

=(B)

2

+(3)

2

(B)

2

=7

B =

7

Therefore,

cos A =

4

7

and tan A =

7

3