Question

Given that sin a = 1/2 and cos ß
= 1/2, then the value of (a + b) is
1 0°
2 30°
3 60°
4 90°​

Answer 1

Answer:

Subtracting a fraction from a whole

Rewrite the whole as a fraction using t2 as the denominator :

t t • t2

t = — = ——————

1 t2 h

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator