The sum of three numbers is 62. The second number is equal to the first number diminished by 4. The third number is four times t
1 answer:
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Step-by-step explanation:
<h3>Prove the LHS
Using trigonometric identities
That's
<h3><u>Rewrite the expression</u>
We have
<h3>So we have
<h3>Using trigonometric identities
<h3><u>Rewrite the expression</u>
That's
<h3>Reduce the expression with cos a
We have the final answer as
<h2>1</h2>As proven
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