Sin40+sin75=cos15+cos50
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Step-by-step explanation:
Questions
prove that
sin40 + sin75 = cos15 + cos50
Formula
Sin( 90 - A) = sinA
To prove
LHS
sin40 + sin75
sin(90 - 50) + sin ( 90 - 15)
from above formula a is 50 and 15
cos50 + cos15
Hence
LHS = RHS
proved
Answered by
0
Answer:
sin40 + sin75 = cos15 + cos50
LHS
= sin(90 - 50) + sin(90 - 15)
= cos50 + cos15
RHS
= cos15 + cos50
= cos50 + cos15
Hence , LHS = RHS
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