The answer is a or b or c or d
Seca(1-sina)(seca+tana)=1
Left hand side
=(1-sina) (seca +tana) / cosa
=seca +tana - sinaseca - sinatan / cosa
=seca + tana -tana -(sin^2a/cosa) / cosa
=(1/cosa - sin^2a/cosa) / cosa
= (1-sin^2a / cosa) / cosa
= (1-sin^2a)/ (cos^2a)
=1 (verified)
Answer:
2y + 18
Step-by-step explanation:
8 + 2(y + 5)
8 + 2y + 10
2y + 18
Answer:
There isn't one
Step-by-step explanation:
√q differs from √(q+1) by 1 only when q=0. The difference gets smaller as q gets larger.
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Here, q=7x. The same logic applies.
Does it have something to do with congruency?
