Question

how do you know that the postmaster is a kind of person class 10


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Answer 1

Answer:

LHS:

Expand the fractions using (a+b+c)²=a²+b²+c²+2ab+2bc+2ca.

Rearrange the terms.

We know that cos²A+sin²A=1.

Now here, take -2cos common from the numerator and +2cos common from the denominator.

Now, rearrange the terms, add 1 and 1 and take 2 common.

Take 2 common.

Take (1+sin) common.

LHS=RHS.

HENCE PROVED!

FUNDAMENTAL TRIGONOMETRIC RATIOS:

T-RATIOS:

Explanation:

Answer 2

Answer:

because he is a very helpful person. he collected money for lencho to do his help.