Question

1...given cos A =0.6; find all other trignomatrical ratios for A


2...if cos A =1/2 and sin ab=
$\frac{1}{ \sqrt{2} }$
$find \: the \: value \: of \: \frac{.}{.} \ \ \frac{ \tan \: a \: - \tan \: b }{1 + \tan \: a \tan \: b \: }$


$\infty no \: spamming$
​

Answer 1

Answer:

We have,

cosA=0.6h

2

=p

2

+b

2

cosA=

10

0.6

​

=

5

3

​

5

2

=p

2

+3

2

cosA=

5

3

​

=

h

b

​

25=p

2

+9

​

sinA=

h

p

​

=

5

4

​

tanA=

b

p

​

=

3

4

​

cosecA=

p

h

​

=

4

5

​

​

cosecA=

p

h

​

=

4

5

​

secA=

b

h

​

=

3

5

​

cotA=

p

b

​

=

4

3

​

Step-by-step explanation: