sin^2 theta + cos theta =2 (Hint: Use the Pythagorean identity sin^2 theta +cos^2 theta =1 to replace sin^2 theta in the given equation).

Question

￼ sin^2 theta + cos theta =2 (Hint: Use the Pythagorean identity ￼sin^2 theta +cos^2 theta =1 to replace ￼sin^2 theta in the given equation).

lalaly · Answer

first solve for sin^2theta in the second equation, do you know how?

anonymous · Answer

0?

lalaly · Answer

$$\sin^2\theta+\cos^2\theta=1$$therefore$$\sin^2\theta=1-\cos^2\theta$$
replacee the sin^2theta in ur first equation by the one i jus found

anonymous · Answer

so 1-cos^2 theta +cos^2 theta =1

lalaly · Answer

yes

anonymous · Answer

so thats my answer?

lalaly · Answer

but wait you wrote 1-cos^2 theta +cos^2 theta =1
its $$1-\cos^2\theta+\cos \theta =1$$

lalaly · Answer

if u are asked to find theta, then u just solve for costheta and find the value of theta

lalaly · Answer

=2*

lalaly · Answer

$$1-\cos^2\theta+\cos \theta=2$$