Question

Fin the value of: cos²45° + sin²30°

option

1]3 /2
2] 3/2
3]1/2
4] 3/4​

Answer 1

Answer:

4] 3/4

Step-by-step explanation:

cos 45 is (1/2)^1/2

sin 30 is 1/2

thus cos^2 45 = 1/2 2/4

sin^2 30 =1/4

According to the question-

cos²45° + sin²30° = 2/4 +1/4 = 3/4