Question

2) From the following figure find the ratio of cos 48º. A 42° 48° В с АВ ВС d. с. АВ а. АС ВС АВ b. ВС АС​

Answer 1

Answer:

Correct option is A)

In △ABC, AD⊥BC AB=13, BD=5, DC=16

Now, In △ABD,

AB

2

=AD

2

+BD

2

13

2

=AD

2

+5

2

AD

2

=144

AD=12

Now, in △ADC,

AC

2

=AD

2

+CD

2

AC

2

=12

2

+16

2

AC

2

=144+256

AC=20 cm

Now, sin

2

C+cos

2

C=(

H

P

)

2

+(

H

B

)

2

=(

AC

AD

)

2

+(

AC

BD

)

2

= (

20

12

)

2

+(

20

16

)

2

=

400

144

+

400

256

=

400

400

= 1

Answer 2

Answer:

it's 92 the answer 400 is wrong so follow it