At 3pm corettas shadow is 1.03 meters long. Her height is 1.65 meters at the same time, a trees shadow is 5.57 meters long. How
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Answer:
Identity is verified.
Step-by-step explanation:
We have to verify the identity
To prove any identity we always prove one side(either left hand side or right hand side) of the equation equal to the other side.
In this identity we take the left hand side first
(as we know cos(a+b) = cosa×cosb-sina×sinb)
= - sinx ( Right hand side)
Hence identity is proved.