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

The value of cos−1(35)+cos−1(1213)=

A
cos1(1665)
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
cos1(3365)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
cos1(7785)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
cos1(1213)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A cos1(1665)

We have,

cos1(35)+cos1(1213)

We know that

cos1x+cos1y=cos1{xy1x21y2}

Therefore,

=cos135×12131(35)21(1213)2

=cos1{366519251144169}

=cos1{3665162525169}

=cos1{366545×513}

=cos1{3665413}

=cos1{362065}

=cos1{1665}

Hence, this is the answer.


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Property 2
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon