Calculate the angle between a and b (correct to the nearest degree) . 
Definitions:
Heterosexism
The presumption or bias in favor of opposite-sex sexuality and relationships, often marginalizing other forms of sexuality.
Sexual Double Standard
The societal norm that applies different rules and moral attitudes toward sexual behavior, often more permissive for men than for women.
Adam Lambert
An American singer, songwriter, and actor who gained fame as a runner-up on the eighth season of "American Idol" and is known for his dynamic vocal performances and collaborations with the band Queen.
Heterosexuality
Heterosexuality is the sexual orientation characterized by romantic or sexual attraction between individuals of the opposite sex.
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