Solution
$$\cos \frac{2 \pi}{6} + \sin \frac{5 \pi}{6} =$$
we can write this
cos60 + sin150 = equation 1
and sin150 = sin( 90 + 60)
= sin90co60 + cos90sin60
put sin90 = 1 and cos60 = 1\2
we get
sin150 = 1\2 and cos 60 = 1\2 put value in equation 1
cos60 + sin150 = 1\2 + 1\2 = 1 Answer
Get AI Help
Create a FREE account and get:
- Download Maths Shortcuts PDF
- Get 300+ previous papers with solutions PDF
- 500+ Online Tests for Free
Book Free CAT Mentorship
Get personalized CAT strategy from a 99%iler
500+ students mentored
OTP Verification
Enter the 6-digit code sent to your phone
Booking Summary
Session:Free CAT Mentorship
Phone:
Date:
Time:
Enter OTP
Didn't receive the OTP?
