Answer:
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Step-by-step explanation:
Given

Required
Determine 
We know that:

This gives:


Collect like terms


Take square roots


By tan identity


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46 = (7*4) +(10/2) +13
46 = 28 +5 +13
46 = 46
so than i ve understood it right your exercise
Answer:
Really
Step-by-step explanation: