Yes it is true:
(1 - cos^2 x) = sin^2 x Sqr.(1 - cos^2 x) = sin x and (-sinx) True, since sin x negative. Also, x terminates in quadrant 3 and 4. Hope this is helpful
5. 12
6. just add all of the numbers up, it would be 32
Step-by-step explanation:
Hence it is a triangle So sum of all the angels of triangle is equal to 180°
Then
5x + 6x + x = 180°
12x = 180°
x = 180° / 12
x = 15°
5x = 5*15°= 75°
6x = 6* 15° = 90°
x = 15°
Hope it helps :)
Answer:
B
Step-by-step explanation:
10 + 9 = 19
I have attached an image of a long division method that can be used to find the quotient and remainder.
Hope I helped :)