Question

answer my question please​

Answer 1

Step-by-step explanation:

Sin Cos Tan Sec Cosec are positive in some Quadrants and negative in some Quadrants

All ratios are positive in 1 quadrant

Sin and Cosec are positive in 2 quadrant

tan and cot in 3 quadrant

cos and sec in 4 quadrant

using this and some basic formulae of trigonometry we can solve this

${cos}^{2} \theta + {si n}^{2} \theta \: = 1$

HOPE IT HELPS