The trigonometric formula (or identity) should you use to help simplify and solve the equation is
<h2>Trigonometry identity</h2>
Given the trigonometry identity
According to trigonometry identity
Also since , the expression becomes;
To simplify the function given, you will substitute into the original equation to have:
Hence the trigonometric formula (or identity) should you use to help simplify and solve the equation is
Learn more on trig identity here: brainly.com/question/24496175
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This question seems to me to be an exercise in applying the rule for a difference of squares in order to rewrite the difference of two relatively large numbers as the "simpler" product of other integers.
Answer:
2c = 25
Step-by-step explanation: