Question

Solve 5cos2∅-2sin2∅=2

Answer 1

Answer:

hi

good morning

Step-by-step explanation:

❤Changing to sine and factorizing, we have (sinθ+1)(5sinθ−3)=0. Since θ lies in the given interval, it must be -ive

∴sinθ=−1orθ= 2/3π = 4/6π

6π

6π which lies in the given interval.

6π which lies in the given interval.∴ 2θ = 4/3π and hence tan

2θ =tan 4/3π =−1❤