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

If sinx+cosx=0, then sinx=

A
5+12
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
5+18
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
518
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
512
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D 512
sinx+cosx=0
sinx=cosx
Squaring both sides:
sinx=cos2x
=1sin2x
sin2x+sinx1=0

Using quadratic formula to find the roots of a quadratic equation, we get:
sinx=1±1+42
sinx=512 (The other value is unacceptable as it is less than -1.)

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