Question

in ∆abc angle b = 90°, ab =12cm bc = 5 cmfind ac​

Answer 1

Answer:

solution of this question is 13

Answer 2

Step-by-step explanation:

a right angled triangle

AC

2

= BC

2

+ AB

2

AC

2

= (5)

2

+ (12)

2

AC

2

= 25+ 144

AC

2

= 169= (13)

2

or

AC=

13

Now from figure,

i.cosA=

A C

A B

=

1 3

1 2

ii.cscA=

B C

A C

=

5

13

iii.cosC=

A C

B C

=

13

5

iv.cscC=

A B

A C

=

1 2

1 3

Hence, proved.

Hope it helps you

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