wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

If in the ΔPQR,Q=90o,PQ=4 cm and PR=9 cm then find the values of the following:
i) sinP
ii) cosP
iii) tanR
iv) sinR+cosR.

Open in App
Solution

Q=90o,
PQ=4cm
PR=9cm
By Pythagoras theorem
PR2=PQ2+QR2
92=42+QR2
3616=QR2
20=QR2
QR=20=25=4.47
sinP=QRPR=259
cosP=QPPR=49
tanR=sinR/cosR
=PQ/QR
=425=25
sinR+cosR=PQPR+QRPR
=49+259
=4+259.

1193050_1265659_ans_e42677a4134045b59a6b6a1e36b65f86.jpg

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Trigonometric Ratios of Special Angles
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon