Question

find the values of
5)cos²45+sin²30​

Answer 1

Answer:

cos45=1/√2

cos²45=1/2

sin30=√3/2

sin²30=3/4

cos²45+sin²30=(1/2)+(3/4)=5/4

Answer 2

cos ²45°= (1/√2 )²= 1/2

Sin²30° =( 1/2 )²=1/4

cos²45+sin²30

= 1/2+1/4

= 2+1/4

= 3/4