Without using a calculator, find the exact value of:
a) tan

b) sin

a.
To find:
The ratio tan 45^{0} without using a calculator.
Given:
The ratio tan 45^{0}.
Definition:
In a right triangle, the tangent ratio for an acute angle is the ratio
Calculation:
From the given,
In a right triangle if the angles are in the ratio
b.
To find:
The ratio sin 60^{0 }without using a calculator.
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