What is sin2 (3 π) + cos2 (4 π) + tan2 (5π) equal to ?
What is sin2 (3 π) + cos2 (4 π) + tan2 (5π) equal to ?
- 0
- 1
- 2
- 3
Answer: (2) 1
Explanation:-
sin2(3 π ) + cos2 (4 π ) + tan2 (5 π )
= sin2 (3 x 180) + cos2 (4 x 180) + tan2 (5 x 180)
= sin2 (360 + 180) + cos2 ( 360 + 360 ) + tan2 ( 2 x 360 + 180)
= sin2 180 + cos2 360 + tan2 180
= (0)2 + (1)2 + (0)2
= 0 + 1 + 0
= 1
Hence, the answer is (2) 1.