Value of cos² 0° + cos²60° is
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Answer:
cos² 0° + cos²60° = 5/4
Step-by-step explanation:
Given: cos² 0° + cos²60°
Cos 0 equals to 1 (Cos 0 = 1). In other words, the value of Cos 0 is 1.
Cos 60 equals to 1/2 (Cos 60 = 1/2). In other words, the value of Cos60 is 1/2.
cos² 0° + cos²60° = (1)² + (1/2)²
= 1 + 1/4
= (4 + 1)/4
= 5/4
So, cos² 0° + cos²60° = 5/4
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