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Pteridophytes are a group of plants that include ferns, horsetails, and clubmosses. They are characterized by having vascular tissues (xylem and phloem) for the transport of water, minerals, and nutrients. The term "cryptogams" historically referred to plants that reproduce by spores and lacked seeds. So, pteridophytes are vascular cryptogams.
If P, Q, R, S are the vertex of a cyclic quadrilateral. Find the value of
`1/sec p` +`1/sec q` +`1/sec r` +`1/sec s`
...If (5sinx - cosx) = 2√2sinx, then find the value of 'tanx'
If sec2 θ = 4, then find the value of sin2 θ + cosec (90 - θ) where 0o < θ < 90o.
The minimum value of 9 cos2 θ + 36 sec2 θ is
What is the value of cos75°?
If tanθ = (2/√5), then find the value of cos2 θ
If sin θ and cos θ are the root of standard Quadratic Equation , then which of the following is true ?
1. a2 + b2 - 2ac =...