We have sec = 1/cos
Then we also have cos^2 = 1 – sin^2
Also we have cos = sqrt (1 – sin^2)
Substitute the derived cosine function to sec then we have
Sec = 1/(sqrt(1-sin^2)
Answer: x^2 + 19
Step-by-step explanation: Cancel out x^2 and add 7 and 12 together. 7 + 12 = 19. Next plug in x^2. So, its now x^2 + 19.
Hope this help!
Answer:
X=10
Step-by-step explanation:
3x=30
3(10)=30
30=30
30+42=72
I hope this helps!
