D) COS
2. The value of sin2 18° + cos2 18° will be :
(a) 0
(b) 1 (from full solutions)
Answers
Answered by
2
Answer:
1
Step-by-step explanation:
sin2 18 + sin2(90-18)
sin2 18 + sin2 72
sin2 18+72
sin2 90
=1
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