Answer:
Identity is verified.
Step-by-step explanation:
We have to verify the identity
To prove any identity we always prove one side(either left hand side or right hand side) of the equation equal to the other side.
In this identity we take the left hand side first
(as we know cos(a+b) = cosa×cosb-sina×sinb)
= - sinx ( Right hand side)
Hence identity is proved.
Answer:
your answer is (4)(-5)(3)
Step-by-step explanation:
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Answer:
4:7
Step-by-step explanation:
4:7
they make 7 cakes in total (3:4 = 7).
there are 4 vanilla cakes.
therefore, the ratio of vanilla cakes to the total number of cakes is 4:7.
3x greater than or equal to 20
3x = 20
X= 7 games for the pass to be better
3(7)=21