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

Which of the following options are equal to cos2A−sin2A?


A

12sin2A

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B

cos2A

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

sin2A

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

2cos2A1

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct options are
A

12sin2A


D

2cos2A1


cos2Asin2A

= 1sin2Asin2A

= 12sin2A

Also

cos2Asin2A

= cos2A(1cos2A)

= 2cos2A1


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