Question

if tana=3/4 and cosb =9/4 where pi

Answer 1

Step-by-step explanation:

ANSWER

Given that:

cosA=0.6

To find:

5tanA−4secA=?

Now, secA=

0.6

1

=

3

5

tan

2

A=sec

2

A−1

or, tan

2

A=

9

25

−1=

9

16

or, tanA=

3

4

Now,

5tanA−4secA=5×

3

4

−4×

3

5

=

3

20

−

3

20

=0

Answer 2

Answer:

0 is your answer

Step-by-step explanation:

osA=0.6

To find:

5tanA−4secA=?

Now, secA=

0.6

1 = 3

5

tan 2

A=sec 2

A−1or, tan 2

A= 9 25 −1= 9 16

or, tanA= 3 4

Now,

5tanA−4secA=5× 3 4 −4× 3 5  = 3 20 − 3 20

=0