Question

if x = 2sin square tita - 1 and y = cos square tita + 2,then find the value of x + 2y

Answer 1

Answer:

x+y=. 2sinsquaretheta +2cos square theta +1. 2(sin square theta + cos square theta )+1. the value of sin square theta + cos square theta =1 so. 2(1)+1. 2+1=3. hope it is helpful

Step-by-step explanation:

Answer 2

Answer:

sin^2 tita + cos^2 tita= 1

x= 2 sin^2 tita - 1

y= cos^2 tita + 2

2y = 2cos^2 tita + 4

a/q

x + 2y = 2 sin^2 tita - 1 + 2cos^2 tita + 4

= 2(sin^2 tita + cos^2 tita) + 1+ 4

= 2* 1 + 5

= 2 + 5

= 7