1.

1 + 10 square theta 1 class 10th squared theta ​

Answer»

Answer:

1

Step-by-step EXPLANATION:

(1 + tan²Ф) (1+sinФ) (1-sinФ)

using the FORMULAS,

(sec²Ф)(1-sin²Ф) -------------(1+tan²Ф=sec²Ф0 and (a+b)(a-b)=(a²-b²)

(sec²Ф)(cos²Ф)

1=rhs

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