What is 7one-half ÷ 3three-fourths
2 answers:
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Answer:
Step-by-step explanation:
Given : sin θ = 3/5
To Find : value of cos θ and tan θ
Solution :
use the identity:
putting value of sin θ
⇒
⇒
⇒
⇒
⇒
⇒
Thus ,
Now to find value of tan θ
Since we know that
⇒ (identity)
⇒
⇒
⇒
⇒
Thus , the value of
Answer:
Step-by-step explanation:
To prove that is a multiple of 7.
Proof by induction:
Let n =1. Then we have 8-1 =7 is a multiple of 7
Thus the P(1) is true.
Let us assume that P(n) is true.
= 7l is true for some integer l
To check for P(n+1)
=LHS
=
Thus we find that this is also a multiple of 7.
If true for n, then true for n+1
Hence we find that since true for 1, we have it is true for all natural numbers.