Question

21. Evaluate the following : 2 tan^2 45 degree+cos^2 45 degree - sin^2 60 degree​

Answer 1

Answer:

3/4

Step-by-step explanation:

2tan²45°+cos²45°- sin²60°

2(1)²+(1/√2)²-(√3/2)²

2+1/2-3/4

(4+2-3)/4

3/4