Math, asked by asim9897577255, 10 months ago

prove That sin(20+ theta) cos(70- theta)+cos(20+theta)sin(70-theta)=1

Answers

Answered by ATHARVA1881

0

Step-by-step explanation:

sin70 - cos20

sin (90-20)-cos20

cos20 - cos 20

= 0

then lhs = rhs

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