Question 70

What is the value of $$\sin^2 45^\circ + \cos^2 45^\circ$$?

Solution

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It is in the form of trigonometric identity

$$\sin^2\theta\ +\cos^2\theta\ =1$$

$$=$$> $$\sin^245^{\circ\ }+\cos^245^{\circ\ }\ =1$$

Hence, the correct answer is Option B

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