Answer:
0.992
Step-by-step explanation:
do you not have a calculator
Answer:
Hello!! The answer is 3
Step-by-step explanation:
15 - 4(3)
15 - 12
3
Step-by-step explanation:
cos θ - sin θ = √2 sin θ
cos θ + sin θ = √2 sin θ + 2sin θ
cos θ + sin θ = √2(sin θ + √2sin θ)
cos θ + sin θ = √2 cos θ. (Proven)