Q44 of 51 Page 54

then find the value of a?

Formula: -

(i)

Given: -

⇒ A – B = 30°………eq(1)

And,

⇒ A + B = 60°………eq(2)

Adding both the equations(1) and (2) we get,

(A – B) + (A + B) = 30° + 60°

2 A = 90°

A = 45°

Putting the Value of A in equation (1) we get,

45° – B = 30°

B = 45°– 30°

B = 15°

If . Prove that: tan² B – sin² B = sin⁴ B sec² B.

If A + B = 90 then prove tha .

If A secθ + B tanθ + C = 0. and P secθ and Q tanθ + R = 0. Prove that: (BR – QC)² – (PC – AR)² = (AQ – BP)²

Evaluate: .