The value of sin² 30 + cos² 45 + cos² 30 is.
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Answered by
6
Answer: 3/2
Step-by-step explanation: sin² 30 + cos² 45 + cos² 30
sin 30=1/2,cos 45=√3/2,cos 30=1/√2
sin² 30 + cos² 45 + cos² 30=(1/2)²+(√3/2)²+(1/√2)²
= 1/4+3/4+1/2
= 1+3+2/4
= 6/4
sin² 30 + cos² 45 + cos² 30 = 3/2
Answered by
5
The answer is 3/2
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