evaluate 4 cot² 45 - sec² 60 + sin² 60 + cos² 90
Asked by bananti500 | 22nd Jan, 2020, 12:22: AM
Expert Answer:
4 cot² 45 - sec² 60 + sin² 60 + cos² 90
= 4 (1)2 - (2)2 + (√3/2)2 + 0
= 4 - 4 + 3/4
= 3/4
Answered by Sneha shidid | 22nd Jan, 2020, 08:50: AM
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