Question

4. In A PQR, ZP = 60°, ZQ = 90° and PR = 15 cm.
Find PQ​

Answer 1

Answer:

R.E.F image

In △ PQR using pythagoras theorem

(PR)

2

=(PQ)

2

+(QR)

2

625-49=(QR)

2

(QR)

2

=576

QR=24CM

now tan P =

7

24

and tan R =

24

7

tanP-tanR=

7

24

−

24

7

=

168

576−49

=

168

527