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explain Sum Identities

Trigonometry

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#1 darshan

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Posted 23 September 2013 - 06:01 AM

what is Sum Identities

#2 rajesh

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Posted 24 September 2013 - 07:40 AM

Sum identities or sum angles:
sin(A+B ) =sinA cosB + cosA sinB
cos(A+B ) =cosA cosB - sinA sinB
tan(A+B ) =$\frac{tanA+tanB}{1-tanAtanB}$

#3 Education2jobs

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Posted 15 May 2015 - 10:00 AM

Hii.

I also want to know about Sum Identities and very thanks to rajesh to help me out about this.

Thanks.

#4 Rahul sharma

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Posted 05 September 2017 - 06:08 AM

HELLO
If you are Preparing for JEE Mathematics you can take help from the books for Mathematics subject to prepare for important topics
SL Loney for  Coordinate geometry
SL Loney for Trigonometry
Hall knight for Higher Algebra
RD Sharma
you can also check out your JEE Advanced Eligibility 2018





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