Question

sin² 60° + cos²45° is equal to (A) (√3+√2)/2
(B) 5/4
(C) ¾
(D) ¼

Answer 1

Solution:

Option B is correct.



Sin²60° + cos ²45°


(√3/2)²+ (1/√2)²


[ Sin60°=√3/2,  cos 45° = 1/√2]


3/4+ 1/2


5/4

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Hope this will help you.....

Answer 2

sin² 60°+ cos²45 °

= (√3/2)²+(1/√2)²

=3/4+1/2

=3+2/4

=5/4

Option B is correct ..