Elevate 2p - 3r +t for p =10,r= -4 and t = 5
2 answers:
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Using the Pythagorean identity, the value of the cosine ratio is
The given parameter is:
By the Pythagorean identity, we have:
So, we have:
This gives
Evaluate
Take LCM
This gives
Take the square root of both sides
Cosine is positive in the fourth quadrant.
So, we have:
Hence, the cosine value is
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