Question

Given sin=0.3, what is cos? Enter your answer as a decimal in the box. Round only your final answer to the nearest hundredth.

Answer 1

Answer:

Answer:

cos(x)=(+/-)0.95cos(x)=(+/−)0.95

Step-by-step explanation:

we know that

sin^{2}(x)+cos^{2}(x)=1sin

2

(x)+cos

2

(x)=1

we have

sin(x)=0.3sin(x)=0.3

substitute and solve for cos(x)

0.3^{2}+cos^{2}(x)=10.3

2

+cos

2

(x)=1

cos^{2}(x)=1-0.3^{2}cos

2

(x)=1−0.3

2

cos^{2}(x)=0.91cos

2

(x)=0.91

cos(x)=(+/-)\sqrt{0.91}cos(x)=(+/−)

0.91

cos(x)=(+/-)0.95cos(x)=(+/−)0.95