Evaluate : 4(sin^4 30°+ cos^4 60°) - 2/3(sin^2 60°- cos^2 45°) +1/2 tan^2 60°
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Evaluate : 4(sin^4 30°+ cos^4 60°) - 2/3(sin^2 60°- cos^2 45°) +1/2 tan^2 60°
show full method
no irrelevant comments
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Question & Answers » Trigonometry» 4[sin4 30+CLICK TO POST A NEW QUESTION
Question
4[sin4 30+cos4 60]-2/3[sin2 60-cos2 45 ] + 1/2 tan2 60
Posted by: Riya Bangia in Trigonometry 9 years ago, Total Answer(s): 1
Answer(s)
4[1/16 + 1/16] -2/3[3/4 - 1/2] + 1/2*3
= 4*2/16 - 2/3*1/2 + 3/2
= 4/8 - 1/3 + 3/2
= 12 - 8 + 36/24
= 40/24
= 20/12 = 10/6 =5/3 [ans.]
By: Animesh Sharma, 9 years ago
Step-by-step explanation:
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