Question

Are the following solutions correct ? Why or why not

Answer 1

`\theta = 0, (\pi)/(2), \pi,...`

Explanation:

`sin\theta + cos \theta = 1 \\\\squaring both the sides\\\\sin^(2)\theta + cos^(2)\theta+2 sin\theta cos\theta = 1 \\\\2sin\theta cos\theta = 0 \\\\sin2\theta = 0\\\\2\theta = 0, \pi, 2 \pi,....\\\\\theta = 0, (\pi)/(2), \pi,...`

This is the correct solution.